PDF malware analysis — malicious · 13acbb178f5119ab

MALICIOUS

PDF

1.2 KB

MD5: 638d8f88ba8e25cf864011d147d542d8 SHA-1: 17cfee2593754de6b266a3b514a894434a0ad801 SHA-256: 13acbb178f5119ab237698b4dceb9863154e04b25aa44c4e5e151074d99eaf30

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript that utilizes an eval() call and exploits CVE-2009-4324 via the media.newPlayer function. This JavaScript is designed to execute arbitrary code, indicating the document's primary purpose is to exploit this vulnerability to deliver a malicious payload. No specific family could be identified from the available evidence.

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` `1b38e1658874855e09d874ce2643315c9992d142c9740d294d9fc96b630fb1ef`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	726 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `a4a39a95112adeb7becbe348ae769bf8a4316eb18c0ca19b042a5144275ca0a0`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	42 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`combined_document_js_000.js` `bb74ba2a2f257c1689d40d82f3a7e0b4ce753f80e0eb52757967c95c96cbe744`	deobfuscated-js	combined document JavaScript streams at offset 0x117	769 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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