PDF malware analysis — malicious · b1818f5c9e025596

MALICIOUS

PDF

2.7 KB Created: 6537-01-01 Authoring application: 4555

MD5: f885bf54266d86f24acc7304e7ca1f99 SHA-1: 3611550dc734a1a5d556aca99e3f5ea11c2858d6 SHA-256: b1818f5c9e025596de6f40c41800916350ed01d7c732b357a2cba4c2b4845a98

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 streams and actions suggest the execution of malicious code. The extracted JavaScript file, 'javascript_obj0013_001.js', is likely responsible for delivering the exploit or a secondary 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` `137112b8f0891763f959d7ee64346301f1c447b992bab779062a7070635b9ee8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4809 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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