PDF malware analysis — malicious · 3f1cfbb4e2b1e850

MALICIOUS

PDF

8.2 KB Created: 2010-09-15 12:42:47 Authoring application: Enoqovoqokelava (via 3771eQimeqipigafara)

MD5: 3a5a66a88459237a82592d5a2f54fa15 SHA-1: eeaa014b9d6ed50e04674f3c5c9f866535154c29 SHA-256: 3f1cfbb4e2b1e850f7c0691f2899850c206dfda11cc70b59d25afc47451718c0

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The CLAMAV_DETECTION heuristic further flags it as obfuscated malware. The embedded JavaScript stream, named javascript_obj0011_000.js, is the primary indicator of malicious activity. While the exact script functionality is not detailed, its presence within an obfuscated PDF strongly suggests it's designed to download and execute a secondary payload or exploit a vulnerability.

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` `5757450ce26593beab5dd76bd15d65db78b0d9ddcf3320402499ea43a3c706f6`	pdf-javascript-stream	PDF /JS object 11 at offset 0x14FA	2946 bytes

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