Malicious PDF — malware analysis report

Static analysis result for SHA-256 3328d209d22f7bad…

MALICIOUS

PDF

4.5 KB Created: 2005-09-29 09:27:34 UTC Authoring application: Acrobat Distiller 8.2.0 (Windows)
MD5: 989c91863b91b245a814a8149068df15 SHA-1: 7109715a249282e928330b4bd1c33c616bae1c0c SHA-256: 3328d209d22f7badbb6ae0ade936a7c8772320df2599fe661af4bf5e60633c42
102 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-36015. Static analysis revealed embedded JavaScript and an embedded file, indicating an attempt to exploit vulnerabilities. The presence of XFA forms and AcroForm buttons with actions further supports the likelihood of an exploit being present. The exact exploit mechanism is not fully detailed, but the overall pattern suggests a downloader or exploit delivery.

Heuristics 7

  • ClamAV: Pdf.Exploit.Agent-36015 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36015
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.