Malicious PDF — malware analysis report

Static analysis result for SHA-256 974a8c78e711d1e5…

MALICIOUS

PDF

9.4 KB
MD5: 5b02ab7cfb9f53ee2977aba713e09e1d SHA-1: a0ed8b799baea80cdee24a03fb06fd85fc554bca SHA-256: 974a8c78e711d1e5c3909b4d657f9cbe736c33b386fc7950ec591ff8bf04f590
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The JavaScript is likely responsible for executing the malicious payload, though its exact function cannot be determined due to obfuscation. The differential parser also failed, suggesting further attempts to hide malicious content.

Heuristics 4

  • 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

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