PDF malware analysis — malicious · 6565470806b0a017

MALICIOUS

PDF

6.7 KB Created: 2010-09-03 08:30:37 Authoring application: Xijokanilohova (via 58ad5Kmgxaloxaxgi)

MD5: 4e36471fa4571cae2412769a3cafd9ea SHA-1: 8474ca05429675ad46353ddaf4e9b94fc12b4563 SHA-256: 6565470806b0a017174cfaf94814112781952cb695282e1cbbe1d1b729d04c02

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains obfuscated JavaScript, flagged by heuristics as malicious and detected by ClamAV. The script attempts to decode and execute a string, likely a URL or command, to download and run a second-stage payload. The ML classifier strongly indicates maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9925

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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