File name:

pdfcompressor.exe

Full analysis: https://app.any.run/tasks/d38f3062-3a36-4574-b770-4f9dc674678a
Verdict: Malicious activity
Analysis date: March 29, 2024, 04:17:21
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386, for MS Windows
MD5:

C49995E16BC41DCE2D713D1763F3D4B9

SHA1:

D4FD536A691AB0C10BCFE748B7679C7F859DFAA2

SHA256:

93051ECE8F556A585B7A524B558276F25DD0780BEA2558045DC3F02F0C537564

SSDEEP:

98304:HrItMD72n/0vdg4DZiXQv8WbbPI9xZuU6pcY+wjA9XulhFwxRUA+kggxJ1BMo/e4:kCw/p4sIYx5y2sohojiwTXSWZo3Je

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Drops the executable file immediately after the start

      • pdfcompressor.exe (PID: 2120)
      • pdfcompressor.exe (PID: 3488)
      • pdfcompressor.tmp (PID: 3180)

    • Registers / Runs the DLL via REGSVR32.EXE

      • pdfcompressor.tmp (PID: 3180)

  • SUSPICIOUS

    • Process drops legitimate windows executable

      • pdfcompressor.tmp (PID: 3180)

    • Reads the Windows owner or organization settings

      • pdfcompressor.tmp (PID: 3180)

    • Creates/Modifies COM task schedule object

      • regsvr32.exe (PID: 848)

    • Reads the Internet Settings

      • pdfcompressor.tmp (PID: 3956)

    • Non-standard symbols in registry

      • pdfcompressor.tmp (PID: 3180)

  • INFO

    • Create files in a temporary directory

      • pdfcompressor.exe (PID: 2120)
      • pdfcompressor.exe (PID: 3488)
      • pdfcompressor.tmp (PID: 3180)
      • PDFCompressor.exe (PID: 748)
      • PDFCompressor.exe (PID: 4092)

    • Reads the computer name

      • pdfcompressor.tmp (PID: 3956)
      • pdfcompressor.tmp (PID: 3180)
      • PDFCompressor.exe (PID: 748)
      • PDFCompressor.exe (PID: 4092)

    • Checks supported languages

      • pdfcompressor.tmp (PID: 3956)
      • pdfcompressor.exe (PID: 2120)
      • pdfcompressor.exe (PID: 3488)
      • pdfcompressor.tmp (PID: 3180)
      • PDFCompressor.exe (PID: 4092)
      • PDFCompressor.exe (PID: 748)
      • qpdf.exe (PID: 3988)

    • Creates files in the program directory

      • pdfcompressor.tmp (PID: 3180)

    • Creates files or folders in the user directory

      • pdfcompressor.tmp (PID: 3180)
      • PDFCompressor.exe (PID: 748)

    • Reads mouse settings

      • regsvr32.exe (PID: 848)
      • PDFCompressor.exe (PID: 748)
      • PDFCompressor.exe (PID: 4092)

    • Creates a software uninstall entry

      • pdfcompressor.tmp (PID: 3180)

    • Reads the machine GUID from the registry

      • PDFCompressor.exe (PID: 748)
      • PDFCompressor.exe (PID: 4092)

    • Application launched itself

      • msedge.exe (PID: 1560)

    • Reads Microsoft Office registry keys

      • PDFCompressor.exe (PID: 748)
      • PDFCompressor.exe (PID: 4092)

    • Manual execution by a user

      • PDFCompressor.exe (PID: 4092)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable Delphi generic (57.2)
.exe | Win32 Executable (generic) (18.2)
.exe | Win16/32 Executable Delphi generic (8.3)
.exe | Generic Win/DOS Executable (8)
.exe | DOS Executable Generic (8)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2014:07:09 07:58:13+00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, Bytes reversed lo, 32-bit, Bytes reversed hi
PEType: PE32
LinkerVersion: 2.25
CodeSize: 65024
InitializedDataSize: 162304
UninitializedDataSize: -
EntryPoint: 0x113bc
OSVersion: 5
ImageVersion: 6
SubsystemVersion: 5
Subsystem: Windows GUI
FileVersionNumber: 5.5.1.0
ProductVersionNumber: 5.5.1.0
FileFlagsMask: 0x003f
FileFlags: (none)
FileOS: Win32
ObjectFileType: Executable application
FileSubtype: -
LanguageCode: Neutral
CharacterSet: Unicode
Comments: This installation was built with Inno Setup.
CompanyName: PDFCompressor.net
FileDescription: PDFCompressor Setup
FileVersion: 5.5.1
LegalCopyright: PDFCompressor.net
ProductName: PDFCompressor
ProductVersion: 5.5.1
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
60
Monitored processes
20
Malicious processes
4
Suspicious processes
1

Behavior graph

Click at the process to see the details
start pdfcompressor.exe no specs pdfcompressor.tmp no specs pdfcompressor.exe pdfcompressor.tmp no specs regsvr32.exe no specs pdfcompressor.exe no specs msedge.exe msedge.exe no specs msedge.exe no specs msedge.exe msedge.exe no specs msedge.exe no specs msedge.exe no specs msedge.exe no specs msedge.exe no specs msedge.exe no specs msedge.exe no specs msedge.exe no specs pdfcompressor.exe no specs qpdf.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
748"C:\Program Files\PDF Compressor\PDFCompressor.exe"C:\Program Files\PDF Compressor\PDFCompressor.exe—pdfcompressor.tmp
User:
admin
Company:
PDFCompressor.net
Integrity Level:
MEDIUM
Description:
Compress Scanned PDF and reduce the PDF file size.
Exit code:
0
Version:
5.05
Modules
Images
c:\program files\pdf compressor\pdfcompressor.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvbvm60.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
844"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=renderer --first-renderer-process --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2192 --field-trial-handle=1356,i,9342771860060988583,3453565268163921539,131072 /prefetch:1C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
848"C:\Windows\system32\regsvr32.exe" /s "C:\Program Files\PDF Compressor\MSCOMCTL.OCX"C:\Windows\System32\regsvr32.exe—pdfcompressor.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Microsoft(C) Register Server
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\regsvr32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
1560"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --single-argument https://www.pdfcompressor.net/C:\Program Files\Microsoft\Edge\Application\msedge.exe
pdfcompressor.tmp
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
1784"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=renderer --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2204 --field-trial-handle=1356,i,9342771860060988583,3453565268163921539,131072 /prefetch:1C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2000"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=109.0.5414.149 "--annotation=exe=C:\Program Files\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win32 "--annotation=prod=Microsoft Edge" --annotation=ver=109.0.1518.115 --initial-client-data=0xc8,0xcc,0xd0,0x9c,0xdc,0x6ba4f598,0x6ba4f5a8,0x6ba4f5b4C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2024"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=unzip.mojom.Unzipper --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3204 --field-trial-handle=1356,i,9342771860060988583,3453565268163921539,131072 /prefetch:8C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2068"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=1196 --field-trial-handle=1356,i,9342771860060988583,3453565268163921539,131072 /prefetch:8C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2120"C:\Users\admin\AppData\Local\Temp\pdfcompressor.exe" C:\Users\admin\AppData\Local\Temp\pdfcompressor.exe—explorer.exe
User:
admin
Company:
PDFCompressor.net
Integrity Level:
MEDIUM
Description:
PDFCompressor Setup
Exit code:
0
Version:
5.5.1
Modules
Images
c:\users\admin\appdata\local\temp\pdfcompressor.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\ole32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
2336"C:\Program Files\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=1668 --field-trial-handle=1356,i,9342771860060988583,3453565268163921539,131072 /prefetch:8C:\Program Files\Microsoft\Edge\Application\msedge.exe—msedge.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
LOW
Description:
Microsoft Edge
Exit code:
0
Version:
109.0.1518.115
Modules
Images
c:\program files\microsoft\edge\application\msedge.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\microsoft\edge\application\109.0.1518.115\msedge_elf.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
Total events
9 119
Read events
8 983
Write events
72
Delete events
64

Modification events

(PID) Process:(3180) pdfcompressor.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:Owner
Value:
6C0C0000DC7A9B069081DA01
(PID) Process:(3180) pdfcompressor.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:SessionHash
Value:
100381CFF53A14ADC6B95DECDB9E8D99415D962BF0D468B939021586BBB5BB67
(PID) Process:(3180) pdfcompressor.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:Sequence
Value:
1
(PID) Process:(3180) pdfcompressor.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:RegFiles0000
Value:
C:\Program Files\PDF Compressor\PDFCompressor.exe
(PID) Process:(3180) pdfcompressor.tmpKey:HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
Operation:writeName:RegFilesHash
Value:
9179AD922526EFAB68FE8108843BD1BA98042E68F866E8F8D98C2326A162DB7E
(PID) Process:(848) regsvr32.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{BDD1F04B-858B-11D1-B16A-00C0F0283628}\InprocServer32
Operation:writeName:ThreadingModel
Value:
Apartment
(PID) Process:(848) regsvr32.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{C74190B6-8589-11D1-B16A-00C0F0283628}\InprocServer32
Operation:writeName:ThreadingModel
Value:
Apartment
(PID) Process:(848) regsvr32.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{1EFB6596-857C-11D1-B16A-00C0F0283628}\InprocServer32
Operation:writeName:ThreadingModel
Value:
Apartment
(PID) Process:(848) regsvr32.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{66833FE6-8583-11D1-B16A-00C0F0283628}\InprocServer32
Operation:writeName:ThreadingModel
Value:
Apartment
(PID) Process:(848) regsvr32.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{2C247F23-8591-11D1-B16A-00C0F0283628}\InprocServer32
Operation:writeName:ThreadingModel
Value:
Apartment
Executable files
35
Suspicious files
20
Text files
50
Unknown types
50

Dropped files

PID
Process
Filename
Type
2120pdfcompressor.exeC:\Users\admin\AppData\Local\Temp\is-K3L7S.tmp\pdfcompressor.tmpexecutable
MD5:—
SHA256:—
3488pdfcompressor.exeC:\Users\admin\AppData\Local\Temp\is-CJTSD.tmp\pdfcompressor.tmpexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Users\admin\AppData\Local\Temp\is-DBI36.tmp\_isetup\_shfoldr.dllexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\is-FVDH5.tmp —
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\unins000.exeexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\is-R2F49.tmpexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\PDFCompressor.exe —
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\is-25P64.tmpexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Program Files\PDF Compressor\MSCOMCTL.OCXexecutable
MD5:—
SHA256:—
3180pdfcompressor.tmpC:\Users\admin\AppData\Roaming\is-S4TQK.tmptext
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
14
DNS requests
12
Threats
0

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:137
—
—
—
whitelisted
—
—
224.0.0.252:5355
—
—
—
unknown
4
System
192.168.100.255:138
—
—
—
unknown
1560
msedge.exe
239.255.255.250:1900
—
—
—
unknown
2804
msedge.exe
72.52.175.61:443
www.pdfcompressor.net
LIQUIDWEB
US
unknown
2804
msedge.exe
13.107.21.239:443
edge.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
unknown
2804
msedge.exe
13.107.42.16:443
config.edge.skype.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted
2804
msedge.exe
104.126.37.139:443
www.bing.com
Akamai International B.V.
DE
unknown
1560
msedge.exe
224.0.0.251:5353
—
—
—
unknown
2804
msedge.exe
204.79.197.239:443
edge.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
unknown

DNS requests

Domain
IP
Reputation
www.pdfcompressor.net
  • 72.52.175.61
unknown
config.edge.skype.com
  • 13.107.42.16
whitelisted
edge.microsoft.com
  • 13.107.21.239
  • 204.79.197.239
whitelisted
www.bing.com
  • 104.126.37.139
  • 104.126.37.131
whitelisted
msedgeextensions.sf.tlu.dl.delivery.mp.microsoft.com
  • 152.199.21.175
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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ANY.RUN
Reports
pdfcompressor.exe