PDF malware analysis — malicious · 8ad711081a642ef3

MALICIOUS

PDF

21.0 KB

MD5: c7a8b6d4c209fc7b97be1c94e6f01ff2 SHA-1: 9ef9eae63011cc1b4dd17b2c3d0e717b8cf34eea SHA-256: 8ad711081a642ef308b8fa1bb7df184736fc05a3c877e689a22d16b6b51ec2fa

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically points to the exploitation of a vulnerability related to media.newPlayer, which is known to be used for arbitrary code execution. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, likely facilitates the download and execution of a secondary payload, although its exact function is obscured. The presence of obfuscation indicators further supports a malicious intent.

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` `f79020a8f79f998f40493fb5e1ea067d374c0379f3b7206aae943316a593eb7c`	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

Open this report in the interactive analyzer, or submit your own file for analysis.