PDF malware analysis — malicious · 3be0818ce887e8bd

MALICIOUS

PDF

7.3 KB Created: 2010-09-16 18:52:20 Authoring application: Qabifagevafa (via 71c12Tiqotezozav)

MD5: b9862227dc00b07d8a7ed160a6131a6a SHA-1: c205743db2fcb4574778555a664d04f33bf8a998 SHA-256: 3be0818ce887e8bd5b1f67e2b7af74488f623c086548153a635ce6083c8da5ae

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file was flagged by multiple heuristics, including ML_NYX_PDF_MALICIOUS and ClamAV, indicating malicious content. The presence of embedded JavaScript, identified as 'javascript_obj0011_000.js', suggests an attempt to execute malicious code. The obfuscated nature of the JavaScript, as indicated by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics, points towards an effort to conceal its true purpose, likely to download and execute a secondary payload or exploit a vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 0.9950

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` `ff85b44f7d06834e69a161aee8e28b7340c56fef50ee1649100cb6f376ea5386`	pdf-javascript-stream	PDF /JS object 11 at offset 0x1364	2324 bytes

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