PDF malware analysis — malicious · 458dc6b9700471c3

MALICIOUS

PDF

6.7 KB Created: 2010-09-03 08:30:37 Authoring application: Xijokanilohova (via 71410Kmgxaloxaxgi)

MD5: 3af0be3f134a557907ba8f374b85357f SHA-1: c866acb316bb95b708ac30c1387468036b76c2fe SHA-256: 458dc6b9700471c327750067559f3dce13a5cb1f88a74b3724732d683da261fc

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection further confirms its malicious nature. The embedded JavaScript stream, named javascript_obj0011_000.js, is the primary indicator of malicious activity. While the exact script functionality is not fully detailed due to obfuscation or truncation, its presence strongly suggests it's designed to download and execute a secondary payload, a common technique for initial access.

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` `d75aba2bc241d027161697fa7aada0bf45c7afe5b58fce1bb0bf66350349f123`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1208	1983 bytes

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