PDF malware analysis — malicious · fc4b0883f1f94b5e

MALICIOUS

PDF

8.6 KB Created: 2009-06-06 12:08:27 Authoring application: gqHxHKUlymTTreW (via cknVaxdHWewEalmCy)

MD5: 614d5497de38c93091612b4e35fc18bd SHA-1: 4020e23434a13e604c5d6b157c9c3ae4b8093340 SHA-256: fc4b0883f1f94b5e9d9038c92c647ef8210abbcb13566a3ff62e46b34c8063ab

86 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 and the presence of an extracted JavaScript file. The ClamAV detection 'Pdf.Exploit.Agent-35572' strongly suggests a known PDF exploit. The JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access. The document body text appears to be obfuscated or nonsensical, providing no direct clues about the lure.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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` `70f3b0298c2ab388fdc7d0a0be9352599fd1cbdacb3fa39a77044f0915bb6e12`	pdf-javascript-stream	PDF /JS object 7 at offset 0x39E	7131 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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