Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7d1cf8966d2fef…

MALICIOUS

PDF

34.7 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)
MD5: 22bb50de47548be04309db8728ea6bc6 SHA-1: e8d4ebf59394e9874c82effd15e7201af4ca95c0 SHA-256: cb7d1cf8966d2fef299d2de6e6d33c40b9a1f4959ddeb3e54126b3d57603bcf1
146 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, including an eval() call, which is highly suspicious. The JavaScript appears to be heavily obfuscated, but the presence of eval() and the ML classifier's strong positive prediction indicate malicious intent. The ClamAV detection name 'Pdf.Dropper.Agent-7304436-0' further supports this, suggesting the file acts as a dropper for other malware. The obfuscated script likely decodes and executes a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7304436-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7304436-0
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

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