PDF malware analysis — malicious · 4062ce4ffbd33a29

MALICIOUS

PDF

7.4 KB Created: 2010-09-16 18:55:19 Authoring application: Tolhipezorojpagiwaqo (via c09a6Seueganadazaqeav)

MD5: bcfc179ee0322fc01e1fbe6f5b5f8681 SHA-1: 1105e1d87c5a27130fabf8f59c1ff01a4f1bf56c SHA-256: 4062ce4ffbd33a299ba7d20bb4b892e66f95adbadcc1e79484bbc5c40c191424

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further confirm its malicious nature. The embedded JavaScript, named javascript_obj0011_000.js, is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery. The obfuscated nature of the PDF content and the presence of JavaScript point towards a malicious document designed to exploit vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

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_obj0011_000.js` `e2d41866c9fb013feb60cefe8b41892c7277decb0774febb940ce493b1221654`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1387	2332 bytes

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