PDF malware analysis — malicious · bb86f4379784f34c

MALICIOUS

PDF

7.6 KB Authoring application: Qimigiwova (via 7bc02Bashemeriwesohitaro)

MD5: a004519e2b20831e1010dea6a95d3509 SHA-1: 2d09acbd567da3d7886e2cc95eb8a3358aed987a SHA-256: bb86f4379784f34c35b371a720dcdcebc9190dd45e8ed290a5f504c4528640be

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded JavaScript, flagged by both heuristics and a machine learning classifier as malicious. ClamAV also detected it as an obfuscated PDF. The presence of JavaScript strongly suggests an attempt to execute malicious code, likely to download and run a secondary payload. The ML classifier's high score and the ClamAV detection indicate a high likelihood of malicious intent.

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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