PDF malware analysis — malicious · ba923a2d727563bb

MALICIOUS

PDF

14.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a639adfbd37af20c0025a62b577bef0c SHA-1: aa73212f60adee6778003900173f2fb0bfdded7b SHA-256: ba923a2d727563bb8fa68b33a4705fd8f7c71cc2e53e66da456d30be7998673a

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval() to execute obfuscated code. This script is designed to exploit a vulnerability within the PDF viewer, leading to the download and execution of a secondary malicious payload, as indicated by the 'Pdf.Exploit.Agent-36118' ClamAV detection. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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_obj0013_000.js` `7c5b341d719ca3f7178c0237fbb63b2941e0c3743c1b9fc92dcf056ca17a67b2`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13374 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).

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