PDF malware analysis — malicious · 7345e96a0ab3fbe8

MALICIOUS

PDF

2.9 KB

MD5: d988b1ac82f4f10e3e51c6b7055d5d21 SHA-1: a5d9d0fa6a8a5f15ab8ffbf633c77c82c92e5154 SHA-256: 7345e96a0ab3fbe8b3e8f0b5947ff41056699cae0814ba1a8ba0b517fcb7846b

208 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that utilizes eval() and a known exploit for CVE-2009-4324 (media.newPlayer). The JavaScript appears to be obfuscated and is designed to construct and execute code, strongly indicating its purpose is to exploit the vulnerability and likely download a further stage. The ML classifier also flagged this PDF as highly malicious.

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` `800c8ea57dafdced5686f635585455b39697950d8b15b4d84864656c548a3c2b`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2396 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 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` `2e4128fa17351736c3d147c4798982df6917dd37d084e8a33eb083533ce2d1f7`	deobfuscated-js	combined document JavaScript streams at offset 0x117	2644 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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