PDF malware analysis — malicious · 49b6c135b9ab39ce

MALICIOUS

PDF

7.7 KB Authoring application: Qimigiwova (via b6ca3Bashemeriwesohitaro)

MD5: 3042ece4d5635dda9e7e57925f99c044 SHA-1: 384eef40dbe9a5ac9b94032ed6b04754946dc509 SHA-256: 49b6c135b9ab39cee92ec4c246510d71f9a357fb0a34284a5764eba0117aef5b

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript stream, named 'javascript_obj0010_000.js', is the primary artifact, and its execution is the likely attack vector. The exact functionality of the script is not fully discernible due to obfuscation, but its presence within a PDF flagged as malicious points to a likely exploit or downloader.

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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