Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e5e3432a0e690aa…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-10
MD5: 27a1c07ce5f292afec8d35a02db83505 SHA-1: 7efd56d029fc9975626f2fe68aaeacd48b2758c5 SHA-256: 8e5e3432a0e690aab3c2575b29996b34304eb133ee1717d9854b303529c0af19
110 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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 8320 bytes
SHA-256: bd018e04f29fe25231912bfcda933d20613d94b3d37b53941fac4fb7b0fc251b
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 7.51, consistent with packed or encrypted content.