PDF / .PHP malware analysis — malicious · b3417a3bbf4a8a45

MALICIOUS

PDF / .PHP

37.7 KB Created: 2010-04-11 20:45:38 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: 9a128b776251c003cf1f3370a19718ec SHA-1: b6e92a8de03a93ff5a4ebb445855cf49d789e9ce SHA-256: b3417a3bbf4a8a4514aadb503e610c1204b6236306a5ea711cecd7f530224b86

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-22604. Static analysis revealed embedded JavaScript within a PDF structure, specifically an Optional Content Group with an action trigger. This suggests the file is designed to exploit a PDF vulnerability, likely to download and execute a second-stage payload. The exact nature of the payload is not discernible from the provided evidence, hence the family is unknown.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-22604 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-22604
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` `7ee0b79103e73a83342da5d5afd66c0a92f779caa10b480a8f80848354b0ea29`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8C3F	1344 bytes

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