PDF malware analysis — malicious · 4e83176e3caeade9

MALICIOUS

PDF

6.6 KB

MD5: e44b431691590d78790e0c9a106db9c7 SHA-1: 2984e2dd88cd33c1aee97fa1d0295ce4147fae1c SHA-256: 4e83176e3caeade9f143430b2b1fd7b879271da148408810ce4276a0f2873752

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious File: User Execution: Malicious File

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically detecting a PDF exploit. Embedded JavaScript, obfuscated and using String.fromCharCode, was extracted, indicating an attempt to execute malicious code. This pattern suggests the PDF is designed to exploit a vulnerability and deliver a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
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_obj0006_000.js` `1fa6617b55347d7a0b5a45698d126b7ad3eae1e411e47fbfd481507eb08a7d1f`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137520 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.