Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fdebf9ff19f725…

MALICIOUS

PDF

11.1 KB
MD5: a1904d05bb83750c61b59e530c58c5f1 SHA-1: 5d4651d671d87680c40bf6dd8ad7c7af1f893c53 SHA-256: 18fdebf9ff19f725de04eac420235e46968c3d9b916e08de9840ac42f3f01857
106 Risk Score

Malware Insights

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

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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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