Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d7c3ee202ea26c…

MALICIOUS

PDF

28.0 KB
MD5: d05e5205a794bf4d79f77253f3cb8377 SHA-1: c7e4bb0507654ed0e17454743d79b13b857a438c SHA-256: 45d7c3ee202ea26c45ce9eb61f932822d995a06d225e31b471c11372f4ba0d8d
100 Risk Score

Malware Insights

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

The PDF utilizes XFA forms, a known vector for embedding malicious content. The embedded JavaScript, although obfuscated, is flagged by ClamAV as Js.Exploit.HTML-30 and the ML classifier indicates a high probability of maliciousness. The script likely attempts to download and execute a second-stage payload, indicated by the embedded URL.

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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