PDF malware analysis — malicious · 16e05ab0666ac1b2

MALICIOUS

PDF

2.8 KB

MD5: 94240ee2d17d6709a6cc79cf27a18252 SHA-1: c3a8dd8d39d80571960200d316b9755d23097327 SHA-256: 16e05ab0666ac1b210511ca28073b3ac9c6e0adc2c32e9540174840f1d146be7

208 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF sample contains embedded JavaScript that utilizes eval() and a known exploit for CVE-2009-4324 (media.newPlayer). The script appears to be designed to construct and execute a payload, likely by downloading additional malicious content from a URL that is obfuscated within the script. The high ML confidence and specific exploit detection strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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.
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `9d60a5ba0e118c5a971a2f1d0544def980806c076e68469b900bc79663dcb892`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2381 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0005_001.js` `4e3679ee7e51b9a1bec8cdc486d5b63bf55e0e31c910c831bf616e117d835101`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	247 bytes
`combined_document_js_000.js` `02c1a48331375972b49a799250213d6a609deb4b58d45fd258f6d0c7e02735d4`	deobfuscated-js	combined document JavaScript streams at offset 0x117	2629 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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