Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb550ce92e0889e…

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: 2d658f894442ed1e51dc168f1c3473bb SHA-1: 7ac552fff681f9968bd96b8d5e55fa42b41ca4fe SHA-256: 5bb550ce92e0889efddad8306249ac74c1fb45d507915748d19f072872c8161d
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ML classifier and ClamAV detection further confirm its malicious nature. The JavaScript is likely designed to exploit a vulnerability within the PDF reader to achieve arbitrary code execution, as suggested by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 3

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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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