PDF malware analysis — malicious · f3290074679de2a5

MALICIOUS

PDF

14.4 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 7b3b63d71ef4f0b7c8a73f19be04cb66 SHA-1: 1259e3842788abb9e909979dc2ee8285b3fb5328 SHA-256: f3290074679de2a575e0a069b87d0943a9dfc4d43758ec88d56f473f1f706526

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and a critical PDF_EVAL call. The ClamAV detection of 'Pdf.Exploit.Agent-36118' strongly suggests a known exploit. The JavaScript appears to use eval() to dynamically construct and execute code, a common technique for downloading and running further malicious content. The extracted document body text contains JavaScript code that uses eval() and string concatenation to build and execute commands, likely to download and execute a second-stage payload.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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_obj0013_000.js` `4c9ec3dac15429644e970254f8c97c4430bdd375b5f0d736111b41e99701ebba`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13230 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

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