PDF / .PHP malware analysis — malicious · b57fbdefff2b1351

MALICIOUS

PDF / .PHP

37.4 KB Created: 2010-04-16 23:32:48 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: 3e97e3c8e8d211360971b433032e9ffd SHA-1: a384437570873580acdb33af5a69c898b1ce7bd6 SHA-256: b57fbdefff2b13518b06cce9844626184c59e2e3428de7067b92d9b960ddbb32

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ClamAV detection of 'Pdf.Exploit.Agent-23993' strongly suggests this is a known exploit. The embedded JavaScript is likely responsible for triggering the exploit, leading to the execution of malicious code. The exact nature of the JavaScript's payload could not be determined due to obfuscation, but its presence is the primary indicator of malicious activity.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-23993 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23993
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` `b7ddb46232fc39bbd2e09ceb81df0b9c9a34084f580a2fa22e70b94547a89e3e`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8B15	1344 bytes

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