PDF malware analysis — malicious · 82c662fcd4e93b05

MALICIOUS

PDF

79.1 KB

MD5: 8f6e93453a22cdcb8c51ec725f70533d SHA-1: 0b0d2224e8456db4de66fd9114c61419ae93323d SHA-256: 82c662fcd4e93b0577d50dacc0c9e8b7cd13d8bb62743070785a95a61964df68

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A critical heuristic identified the CVE-2009-4324 vulnerability (media.newPlayer), which is often leveraged by exploit kits to launch malicious code. The deobfuscated JavaScript, specifically legacy_pdfkit_stage_000.js, likely downloads and executes a second-stage payload. The presence of obfuscation indicators further supports this. The document body content is not indicative of a specific lure.

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` `de89926288d67ae5c15840e9977fb179f6633af147684af7bfabc668b39687bc`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3583 bytes
`legacy_pdfkit_stage_000.js` `16651df8e8df7d935c1bbe6544888e572df5246379bebbf9ec14a474d8e42690`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x101A	2552 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.