PDF malware analysis — malicious · f28f720a0fa5ed1c

MALICIOUS

PDF

21.4 KB

MD5: 508d6c9f000dafd4a1cddd701d17148f SHA-1: 96df8d860c4675899b855ac543194395b139b5ea SHA-256: f28f720a0fa5ed1c21e62a2bd8736d016d38d6c2e9fe4afd9912daaf5beb7db7

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically identifies the use of the media.newPlayer API to trigger an exploit. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, likely contains code to download and execute a secondary payload, although its exact functionality is obscured. The presence of the CVE-2009-4324 exploit and embedded JavaScript strongly suggests a malicious intent to compromise the user's system.

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` `7beecc519645c96ca7429c745fd264927b609c23a7d62623a4e962fb1efeb80d`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2205 bytes
`legacy_pdfkit_stage_000.js` `c3df0b6d669953258363ab802ac0d32c63d5685d76eb2e0ad1f70f86b924f691`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xAB8	1256 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.