Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc54bfb820cc45f9…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-10
MD5: 0e8bab9a97699aa4ef505a1d07397b02 SHA-1: 1904369c73a6c2aef88d84edc09c427fe8754801 SHA-256: cc54bfb820cc45f9d8aa59a35896fe8114cf094c7917aafae4be89dc37e1b82c
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 6323 bytes
SHA-256: 0599e11e4a4b32843b442a8f23999865f4c7bf2be1d4261e1501f58b3c6581b5
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