Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e3f4c06054a4186…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-11
MD5: ac7fc58dfb86facc68cd81dd7ae49306 SHA-1: f51097c90e81d96ff0caf76a442a9b2c3e83e2ff SHA-256: 3e3f4c06054a4186d50c82106fd7fb0bc5c908f36fa93467a3679e80d34bb51b
110 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 2

  • VBScript-style decimal byte array decodes to a PE payload critical PDF_VBS_DECIMAL_ARRAY_PE_PAYLOAD
    PDF comment text contains a VB/VBScript-style decimal byte array, such as c(077),c(090), that decodes to a verified Windows PE executable. The rule is gated on a comment-line Array(c(...)) assignment and a valid MZ/PE header to keep false positives low.
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
decimal_array_pdf_pe_00000229.exe embedded-pe PDF raw comment decimal-array PE payload at offset 0x229 27164 bytes
SHA-256: f2d9c4e90a89e1a62417e108116cc3d6e67767d1b5bb6e02bf0f1861878841e4
Detection
ClamAV: No threats found
Obfuscation or payload: likely
actual_type=PE; declared_or_context_type=PDF; filename=decimal_array_pdf_pe_00000229.exe; kind=embedded-pe Carved artifact entropy is 7.88, consistent with packed or encrypted content.