PDF malware analysis — malicious · da488ae238b99bbb

MALICIOUS

PDF

17.8 KB

MD5: f63dff7b80d19981719a4aa08b6c09d3 SHA-1: 531f555cb6ca60a80fdd34b23b0b8c3a064a3d72 SHA-256: da488ae238b99bbb0ed3fb6655ae59c122d53e0e7cff44c3b2ead2127813cb46

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1059.007 JavaScript

This PDF exploits CVE-2009-4324 using obfuscated JavaScript. The script utilizes eval() and unescape() functions to decode and execute a secondary payload. The deobfuscated JavaScript artifacts suggest the primary goal is to download and execute further malicious content from a remote source, likely leveraging the embedded URLs.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `4cc9249f0b19309e5536bf76aaad7292029fb89b6a9045d3674f381c5a3825fd`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3312 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111712_001.js` `3e4e2a003a523a7e072981518b9e3232b90adfc1983632f0e52c6ec1d2084818`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xEB4	11994 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`javascript_obj111713_002.js` `5c7dae7b76699f46f2200513a2db757ae962b699e36c2d1e7064ebb776db7691`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x3DC4	2360 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `14d9d23d619682a659b666d1537fbe47a8cc4db49b0c37d63714847d39b24a42`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xEB4	1080 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` `d857095ce0aaa2f738ce8446e5f6594103e22bef23760c8a46bf3f0160e08a22`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x3DC4	171 bytes
`legacy_pdfkit_stage_002.js` `8aada638977388ae3b082a22093a8ce9bd5207a0824ebd9a996c1db3d41ae827`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xEB4	1252 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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