Malicious PDF — malware analysis report

Static analysis result for SHA-256 deffbae5f8696364…

MALICIOUS

PDF

7.5 KB
MD5: fcdebe8850990328276814aa66d6553f SHA-1: 3b9ec5139d7eeeb5e9a2f3e2d9905d4fe9bcf754 SHA-256: deffbae5f86963641b601eaf4f80b3f0160b4fa1e104bac2258b14ff310f7244
108 Risk Score

Malware Insights

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

The sample is a malicious PDF identified by ClamAV as Pdf.Dropper.Agent-7313908-0 and flagged with high confidence by an ML classifier. Heuristics indicate the presence of embedded JavaScript, suggesting it is designed to execute malicious code upon opening. This likely involves exploiting a PDF vulnerability to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7313908-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7313908-0
  • 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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