Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d659648bd8a8be3…

MALICIOUS

PDF

12.2 KB
MD5: 1c4399c2a4e6d4695c168641357ee63b SHA-1: a958d0f2490fde9d5880681ea9d735e5a706b1a8 SHA-256: 3d659648bd8a8be363d33ca2b1d11f6fa26b94f068f063d9be28460d57fc0cc6
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged it with Heuristics.PDF.ObfuscatedNameObject, suggesting obfuscation techniques are in use. The embedded JavaScript is likely responsible for executing the malicious payload, although its specific actions could not be determined due to obfuscation. The file's purpose is to deliver a malicious payload via JavaScript execution within the PDF.

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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