Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bb2a037b2db0082…

MALICIOUS

PDF

12.3 KB
MD5: e12712a837b303397825dcd848e9bdc5 SHA-1: d8b0dcef62648002a938eda24b2f5cb1a342d245 SHA-256: 8bb2a037b2db00823d4079784fe56d8dc542e7d94c807c36124dcf9935458968
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The obfuscated nature of the PDF, as suggested by ClamAV's 'ObfuscatedNameObject' detection, points towards an attempt to conceal malicious JavaScript execution, likely for exploiting a vulnerability or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.