PDF malware analysis — malicious · 24a89a52656b454b

MALICIOUS

PDF

7.7 KB Authoring application: Qimigiwova (via d1bdaBashemeriwesohitaro)

MD5: a0a2f27684e27d0927dd1ffe0f119a87 SHA-1: b2dfccd9d7c16bc513d9a4b9ead64250e72406c2 SHA-256: 24a89a52656b454b00d03ebfdadc17a1bed9c8117367dc8267a717db6dbc5b61

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for obfuscated objects and an ML classifier indicating maliciousness. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings, suggests an attempt to execute code. While the JavaScript content itself is not directly provided for analysis, its presence within a malicious PDF strongly implies it's used to download and execute a secondary payload or exploit a vulnerability.

Machine Learning

Nyx PDF Classifier malicious score 0.9988

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_obj0010_000.js` `ed31b16df2b6492a4d5be85b534deca964c2f0e07a8443782787f4ed9c62c93c`	pdf-javascript-stream	PDF /JS object 10 at offset 0x1303	3192 bytes

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