PDF malware analysis — malicious · 089218451cf5d5b6

MALICIOUS

PDF

6.5 KB Created: 2010-08-28 07:57:24 Authoring application: Sejegageiqesoy (via 410b0Golbohoro sazi)

MD5: ca8512439c1a0f780f4bf7e10e08bfce SHA-1: 043b46a04901f44e754273455032c8ab078f7210 SHA-256: 089218451cf5d5b62e9e9e1eccd5dca753d9acca569c50ac7a6b08b38bfbd624

106 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript, flagged by multiple heuristics including ML_NYX_PDF_MALICIOUS and ClamAV's Heuristics.PDF.ObfuscatedNameObject. The JavaScript code attempts to execute arbitrary commands, indicated by the use of app.alert and the obfuscated nature of the script, suggesting it's designed to download and execute a secondary payload. The specific JavaScript function `_RM` reconstructs strings, and while the exact payload URL or command is obfuscated, the overall intent is clear.

Machine Learning

Nyx PDF Classifier malicious score 0.9986

Heuristics 3

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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_obj0010_000.js` `aac1b797b7f4df3946f776d0024554d1424521045e1cc32853762bfc85b57b27`	pdf-javascript-stream	PDF /JS object 10 at offset 0x118D	1781 bytes

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