PDF / .PHP malware analysis — malicious · 37e50af8c08fc93f

MALICIOUS

PDF / .PHP

21.0 KB

MD5: 76cfd025787f9f670c8253e6a3191b45 SHA-1: 2d39ecee0a6e336155927c7688c9f3a9546cbba2 SHA-256: 37e50af8c08fc93f7e6d600d43b8526012e34a697b77962a4dd64fcdc3e21b03

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A critical heuristic identifies the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the JavaScript is designed to exploit this flaw. The deobfuscated JavaScript likely attempts to download and execute a secondary payload, a common technique for initial access.

Heuristics 4

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `d0bb043ad2b9b38bd1a8b89dbccdc058e239b5fa24013d04b99dc338ef5e1a6d`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	1629 bytes
`legacy_pdfkit_stage_000.js` `daae90e2942a4b3134ed63c80561dbbf40944f38c696d9d6efcde48617f8f3d5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x878	1269 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `42025b552c7960b53abcd8cd732b01c8d109eccfdfefc352b9826c4d5807d414`	deobfuscated-js	cross-stage annotation API aliases at offset 0x1E7	81 bytes

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