PDF malware analysis — malicious · cb669a81498ec627

MALICIOUS

PDF

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

MD5: 15a0aaa67f2c9beedadc9531d9e125cc SHA-1: 3fee3399963a690f616eed00b7ad45da9b0dd508 SHA-256: cb669a81498ec627ed6802b7da68011b5657f55b77b10cd149307d10c0c8a644

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. ClamAV detections and ML classifiers confirm its malicious nature, specifically flagging it as Pdf.Exploit.Agent-36118. The embedded scripts are highly obfuscated, but the presence of eval() and the ML classification strongly suggest the intent is to download and execute a further stage.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `a2eeb777096cfba051b720a65a4f46f38e4a942de45838083fc2815b29a702a9`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13428 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj0013_001.js` `39053f334bd829753abbcf3ada2e4d28beda7bcf169bf5e54404becb40b4e4cf`	pdf-javascript-stream	PDF /JS object 13 at offset 0x359	14134 bytes
Detection ClamAV: Pdf.Exploit.Agent-36118 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.