PDF malware analysis — malicious · 8a0a6b04ed4b025c

MALICIOUS

PDF

53.4 KB Created: 2009-06-25 13:59:21 Authoring application: GOQqYfDqWkUTAQXU (via dAEarAYHLyENczlq)

MD5: 9528128b26087e4ab2bf5d61044efa48 SHA-1: a8a9d39669014d850a9acdb5d65b0e80a6083956 SHA-256: 8a0a6b04ed4b025c55ab15911d51837ccf8854da05735a912abced2ea4ab1ff8

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The file is a PDF containing obfuscated JavaScript, indicated by multiple PDF-specific heuristics including `PDF_JAVASCRIPT`, `PDF_JS`, `PDF_FROMCHARCODE`, and `PDF_EVAL`. The critical ClamAV detection `Pdf.Dropper.Agent-7280280-0` strongly suggests a malicious dropper. The embedded JavaScript, though obfuscated, is the primary mechanism for delivering the malicious payload, likely involving downloading and executing further stages. The document body itself is largely unreadable, providing no contextual clues for the attack.

Heuristics 6

ClamAV: Pdf.Dropper.Agent-7280280-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7280280-0
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_obj0007_000.js` `f5488ebfa3394e33081a20382c59341aa3739f7a4c36cf4ca0865ef0dc075c36`	pdf-javascript-stream	PDF /JS object 7 at offset 0x558	52599 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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