PDF malware analysis — malicious · f8b1bda2ed62d396

MALICIOUS

PDF

2.7 KB Created: 4471-01-01 Authoring application: 9781

MD5: c30be9e406a1ec770f9e1b7984f55443 SHA-1: 557a4326b2dadc7166769b645a8bab8205a1b450 SHA-256: f8b1bda2ed62d396ae47f0330d288ad908e7d9dcf45d803792efe6a1fb67a903

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it contains an exploit. Embedded JavaScript, identified as 'javascript_obj0013_001.js', was also detected with obfuscation indicators. This JavaScript is likely responsible for executing the exploit and downloading a second-stage payload.

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` `7c59ad88a20df40935311dc646dd235ad1c779309c67ee1bac0c454b245e1191`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4898 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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