Malicious PDF — malware analysis report

Static analysis result for SHA-256 123c33d931e9a054…

MALICIOUS

PDF

22.3 KB Created: 2009-04-24 09:54:29 +02:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 8ff6c081169ca89230b796a0c41345fa SHA-1: 043036def723f34cec20880572f45516314078c1 SHA-256: 123c33d931e9a0542ea1740638c8baa08a3ad147b6d4566fa66316bccadad1fe
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, flagged by multiple heuristics and a machine learning classifier. The JavaScript is obfuscated but appears to be designed to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Pdf.Dropper.Agent-7230797-0'. The document body contains obfuscated JavaScript code that uses eval to execute further code, likely for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7230797-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7230797-0
  • 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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