PDF malware analysis — malicious · 32e93539cce04c46

MALICIOUS

PDF

3.9 KB

MD5: fb4d74f2cd723270279c6ae65f37d31e SHA-1: 936fcbb1c1fd942038c288602f52b81f18b909af SHA-256: 32e93539cce04c46472c768a60fecd2471c90a270bd2698a338c7066c78397ee

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ML classifiers and ClamAV as obfuscated and malicious. Heuristics indicate the presence of embedded JavaScript, which was extracted as 'javascript_obj0032_000.js'. This script is likely responsible for downloading and executing a second-stage payload, contributing to the overall malicious nature of the document.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `76fb87f7304f78822e7020bcf83636dcb87065328f7510a2c7009645fc007143`	pdf-javascript-stream	PDF /JS object 32 at offset 0xEA	16105 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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