Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad764754bcee6d1…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-10
MD5: 799674e605588b3da806b6ed877490ac SHA-1: 051dbc8839da6a286638fe63f4b85cc6c291d7e7 SHA-256: bad764754bcee6d18a18804021962f4fbe17e8664c790e2e8c81b0d13374d96b
110 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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 24192 bytes
SHA-256: fe4f3bf6d5e48a7adfdaf63e9fa337c3b83d405913e483a1221ba1913e6f6230
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 7.86, consistent with packed or encrypted content.