Pdf.Dropper.Agent-1829086 — PDF malware analysis

Static analysis result for SHA-256 ff210f4f29227eb0…

MALICIOUS

PDF

3.0 KB
MD5: dc80e392721b5de61bbe07bfbf797d51 SHA-1: 69bebd28375179cef7ab9894ce236accfe1e1ed2 SHA-256: ff210f4f29227eb05bdcec6dcb771decdc188cbe459f866e84ce405d32821c7c
116 Risk Score

Malware Insights

Pdf.Dropper.Agent-1829086 · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent, identifying it as Pdf.Dropper.Agent-1829086. The embedded JavaScript file, 'javascript_obj0009_000.js', is likely responsible for downloading and executing a second-stage payload, a common technique for PDF-based malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-1829086 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1829086
  • 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. (matched inside decoded stream)
  • 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_obj0009_000.js
331f99e154cc5aae75fc7d4268d1c29281fc2e4f5daa5175b5b5275af8b17f2f
pdf-javascript-stream PDF /JS object 9 at offset 0xD6 20833 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).