PDF malware analysis — malicious · 890ad60b8d494fd8

MALICIOUS

PDF

58.8 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: lice (via ubst)

MD5: 312ed8b89720d94b68b3adbf5c6adefe SHA-1: 90fdf6640720acde6b2b47493ba746ebb848bc83 SHA-256: 890ad60b8d494fd891c386a3ba6c9a696e878b2f6dfe710fadf9e154936690b3

106 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript, flagged by multiple heuristics and identified by ClamAV as Pdf.Exploit.Dropped-94. The JavaScript code is heavily obfuscated but appears to be designed to download and execute a secondary payload. This is a common technique for delivering malware via malicious documents.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `5b4f2ecdc9c5b2f4cad8e70154501963a9430f54109295688b1734b4d709ff07`	pdf-javascript-stream	PDF /JS object 76 at offset 0x955	50378 bytes

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