PDF malware analysis — malicious · 0f13f0e147f02e6b

MALICIOUS

PDF

7.7 KB Authoring application: Qimigiwova (via 5e0e4Bashemeriwesohitaro)

MD5: 634d561a76481fab980ad4b32ec0aadb SHA-1: 53b923e3b7a34b4cf490e14d26956c263d62c642 SHA-256: 0f13f0e147f02e6bfbc1652180e4a221e623142dea60e3b578ae73bfe653b8d3

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, flagged by multiple heuristics including a critical ClamAV detection for obfuscated objects. The JavaScript code appears to be designed to execute malicious actions, likely involving downloading and running a second-stage payload. The ML classifier also strongly indicates maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9989

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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