Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ea5c316428a2ad7…

MALICIOUS

PDF

31.3 KB Created: 2009-12-24 17:05:33 +03:00 Authoring application: pageDolor (via ef452c63f81d0105dd4486f775adec81)
MD5: 4bb7f558e7c84c195ddafe2eedad2b30 SHA-1: 49d12a6556ffb1a936b6b536447377741a227ef4 SHA-256: 1ea5c316428a2ad7032cd9f3123442695a1a6486b1e45a62b82bca1d327347e7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious Link/URL

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Pdf.Dropper.Agent-7236951-0' strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common dropper behavior. The document body is heavily obfuscated and unreadable, providing no further context on the lure.

Heuristics 6

  • ClamAV: Pdf.Dropper.Agent-7236951-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7236951-0
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
  • 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.
  • Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT
    Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
e8d4198390a21837a6ae50a35114aa2ea7c6b2c844b7f9d058a2439169bf4c22		 pdf-javascript-stream PDF /JS object 12 at offset 0x164C 35832 bytes
javascript_obj0014_001.js
60c9daaec8198ee2c0311b6fcd20c4aa7bfdbbe5bafdb87a75302e53410984f1		 pdf-javascript-stream PDF /JS object 14 at offset 0x72B8 1428 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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