PDF malware analysis — malicious · 6cc9c6b8b92ad742

MALICIOUS

PDF

3.8 KB Created: 2008-09-07 22:47:39 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12; modified using iText 2.1.7 by 1T3XT)

MD5: 38fa77db6bad1ba96d811cf038090fe2 SHA-1: 336298ef368cb8bc2de714a2bdf886af21a0c0cf SHA-256: 6cc9c6b8b92ad7429233ed90acde7e1003ffec806cb3f8d2f2e270d88a5e401e

176 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript that is heavily obfuscated, a common technique for malware droppers. The heuristics indicate a PDF JavaScript exploit cluster and ML classification strongly suggests maliciousness. The embedded JavaScript likely attempts to download and execute a secondary payload, as indicated by the ClamAV detection name 'Pdf.Dropper.Agent-7270216-0'.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Dropper.Agent-7270216-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7270216-0
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `924d630fcd72142530273dd60c0a85435d3971200f87b20eff53a6431e6aad71`	pdf-javascript-stream	PDF /JS object 13 at offset 0x352	2278 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0013_002.js` `77b5be9d1381e6daa0a3f32d8144e016334d7d84326274026349b27e848be164`	pdf-javascript-stream	PDF /JS object 13 at offset 0x372	2974 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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