Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d668194d95fa92f…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-11
MD5: 970c6c6e8b9942c629c5dad5b66286fa SHA-1: 069657b6ad35c32c763e4ab400f7f1ae627786e6 SHA-256: 4d668194d95fa92f31f61c3e863f21e601270103a18632be55c8eeeeb325798e
110 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 2163 bytes
SHA-256: 0271d9b7821e78832a366689317589a875a95ea818ba528d0f5df511784f615f
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