Malicious PDF — malware analysis report

Static analysis result for SHA-256 aafc822363b20d13…

MALICIOUS

PDF

244.6 KB First seen: 2026-05-10
MD5: 26df702360a84e85b09923d07d7cc11a SHA-1: 5549b3cc419f3c605509c079056e494ea3d02c3d SHA-256: aafc822363b20d1344e922ce79071054299520acd14f2699491d252bd06c7ed8
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 24255 bytes
SHA-256: 919e0f2cfe4a2e978dd008cafe6ec0f818b5762b8259d1231110ddeb4b7473e2
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.