PDF malware analysis — malicious · fe2ebd0a1c509208

MALICIOUS

PDF

29.9 KB Created: 2009-08-04 16:36:05 Authoring application: uXWINlgthWNXtWTMiIAJ (via CWazfCZbsPPPXqT)

MD5: 833cf656d0b44a09a6e02de8ae925bd5 SHA-1: a78b650dc16cf52130a8090bf3a2493c7e73ccf0 SHA-256: fe2ebd0a1c50920829aee6d8b0227fc973eeb0eae92e28f3afce48780fa23881

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and a critical PDF_EVAL call. The ClamAV detection 'Pdf.Dropper.Agent-7328781-0' strongly suggests this is a dropper. The JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact mechanism is obfuscated. The document body is unreadable, providing no further context on the lure.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7328781-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7328781-0
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.
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.

Filename	Kind	Source	Size
`javascript_obj0015_000.js` `afba228b8d9705d973a29eee103f7789b52b1da1fae68e23d75f2715ab258800`	pdf-javascript-stream	PDF /JS object 15 at offset 0x379A	15357 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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