Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc77db6c73248c3…

MALICIOUS

PDF

3.6 KB
MD5: 40169341b8e547d3f725a02d187ababc SHA-1: e22665571f76aad401900744b9c57b169cee035d SHA-256: 0cc77db6c73248c387b88039cd43c403dabd739e9bec96e468eb930cc5bb1458
106 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV with a critical heuristic for obfuscated JavaScript. The embedded JavaScript is likely intended to download and execute a second-stage payload, a common technique for malicious PDFs. The presence of JavaScript actions and streams strongly suggests this attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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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