PDF malware analysis — malicious · 35bef0be7ae7ee5a

MALICIOUS

PDF

37.1 KB Created: 2010-04-15 07:29:06 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: de0b2f8d8d93947cfed7b85c71422107 SHA-1: 4679b458dc71f1e5e72d683ab0d4cdffb37149ac SHA-256: 35bef0be7ae7ee5a574884fe26a748600e4f37a8e5b4af2b591e641e3e82fd1a

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF document flagged by ClamAV as Pdf.Exploit.Agent-22224 and a machine learning classifier. It contains embedded JavaScript, which is a common technique for exploiting PDF vulnerabilities. The JavaScript action and embedded JS stream heuristics indicate that the script is likely responsible for executing the malicious payload. No specific IOCs were extracted, but the presence of JavaScript and the high confidence ML score suggest a high likelihood of exploit execution.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-22224 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-22224
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.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `fbd6af12bbfbdc9f227795b60594076196b4aba231fef649bbc4cf14ef7a3605`	pdf-javascript-stream	PDF /JS object 10 at offset 0x89E5	1344 bytes

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