Malicious PDF — malware analysis report

Static analysis result for SHA-256 89310109cd3c353b…

MALICIOUS

PDF

10.8 KB
MD5: 7c356a0e29fbdb6833a004cec5778504 SHA-1: c2c4bfe9fccd36665a0ad7f5f886f9f0790526c7 SHA-256: 89310109cd3c353b19ec0a90963a3ba7537cbd8ce999f2e4b86ccb00148c970b
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged this file as malicious due to Heuristics.PDF.ObfuscatedNameObject. The embedded JavaScript is likely responsible for executing the malicious payload, although its exact function cannot be determined due to obfuscation. The attack pattern is consistent with a malicious PDF designed to deliver a secondary payload.

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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