Pdf.Dropper.Agent-7217654-0 — PDF malware analysis

Static analysis result for SHA-256 c201b20f0e77c129…

MALICIOUS

PDF

60.6 KB Created: 2009-07-03 15:03:13 Authoring application: zzzNudCnNyYsdjtZY (via QLnOChRKrQgKNe)
MD5: 6bf1c24907a122b74abad8cf59a45887 SHA-1: a91c6ef850f43b1775286d2e60fba9b022ee6952 SHA-256: c201b20f0e77c1299c5f4f4a0a2c6b8b05739afa8dcd2fda1de51b4a880ab1cc
116 Risk Score

Malware Insights

Pdf.Dropper.Agent-7217654-0 · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. It contains embedded JavaScript, indicated by multiple heuristic firings and the presence of an extracted javascript file. The JavaScript is likely responsible for executing a malicious payload, as suggested by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics. The document body contains obfuscated text and metadata, further supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7217654-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7217654-0
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • String.fromCharCode low PDF_FROMCHARCODE
    String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules.
  • Suspicious extracted artifact info 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
javascript_obj0007_000.js
5e35069119691c66db801cff83c4895e1b7b243a0499cd6798f67a307b11cfcf
pdf-javascript-stream PDF /JS object 7 at offset 0x4AB 59967 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).