PDF / .PHP malware analysis — malicious · 12a09084dbcd9ffb

MALICIOUS

PDF / .PHP

37.8 KB Created: 2010-04-11 20:50:02 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: cd302d18c86d41f4cbf3a8633e95d596 SHA-1: b0100e07e843b47818970b927d792639dddfc2e7 SHA-256: 12a09084dbcd9ffbe280c3a13990a4195d9d4cbebeebaa7a2bb6f704a8bd1528

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that is obfuscated but appears to construct a string, likely a URL or command, which is then evaluated. This JavaScript is triggered by an action within the PDF, indicating an attempt to exploit a vulnerability for client execution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-22615 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-22615
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` `52b7599aa3a1b9fc14d5ed3768a2efde02b40c9f3afbc9186f269d3cabc0ba64`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8CE4	1346 bytes

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