PDF malware analysis — malicious · 76feeeb19a18285f

MALICIOUS

PDF

2.7 KB Created: 3235-01-01 Authoring application: 1275

MD5: 96f4809b66c13c8234f78b7a6ce6e22d SHA-1: a0f3e1e5bc9b6939b0c514d336a1e2e0edfb4b17 SHA-256: 76feeeb19a18285f06b680f6ffb9c728fac0776ab5f2e80ee8ebc0acf6b15340

126 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating it contains an exploit. The presence of embedded JavaScript, specifically 'javascript_obj0013_001.js', suggests the execution of malicious code. This JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload, a common technique for initial access.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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_obj0013_001.js` `d61902fc6f6720931d2a1ed9debdcbb241aeabda33b8e60493be16338d979242`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	5174 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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