Malicious PDF — malware analysis report

Static analysis result for SHA-256 01234325635a065e…

MALICIOUS

PDF

31.9 KB
MD5: a055c9b3a03d17730a4d75185b4065fc SHA-1: 5c5e14cbf8a6a6609fddb31110f4a34c2030e048 SHA-256: 01234325635a065ef1c9e183088f854efe9c2410ca92efb43ed960a59f9088fe
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting embedded JavaScript. The presence of an XFA form and an embedded URL further supports its malicious nature. The embedded JavaScript likely attempts to download and execute a second-stage payload, although its exact functionality is obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.xfa.org/schema/xfa-template/2.5/

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