PDF malware analysis — malicious · 86000871bebedf73

MALICIOUS

PDF

1.4 KB

MD5: 70d035ecbd7dbf17bd711cddd6b6ae78 SHA-1: 6c5c9fdc529b1ab571a635f1a7f6bf57c008be40 SHA-256: 86000871bebedf73946114d31bf66914e32a0cddee14c6137d3f321425157caf

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains embedded JavaScript that exploits CVE-2009-4324 via the media.newPlayer function. The JavaScript is heavily obfuscated but appears to be designed to trigger an exploit, leading to arbitrary code execution. The ML classifier strongly indicates maliciousness, and the critical heuristic firings confirm the exploit attempt.

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. (matched in decompressed stream)
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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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_obj111111_000.js` `bd59f6cf5558ba7a86461b796836d9e102cf2c9ea6320acfff08192ae2fa5935`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1221 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `7712e95569950e31ccba6385439cafdea05cd2158ed4a5b1c1808de21679a479`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x473	255 bytes
`combined_document_js_000.js` `1fef253a8a8ae3900532f68118ae9202a3502befba27adeb853501da1cd967f0`	deobfuscated-js	combined document JavaScript streams at offset 0x160	1477 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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