PDF malware analysis — malicious · 6c82dd02d58dd151

MALICIOUS

PDF

1.4 KB

MD5: d7689e831d3bfa2a23ddb715aed1572b SHA-1: 1c099d61dae63f55ebe9451e41861a0f6cd8bc57 SHA-256: 6c82dd02d58dd1511fb0165cc964d7cfc0b571a04d47790ea53388d5533c064a

208 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that leverages the unescape() function and exploits CVE-2009-4324 by calling media.newPlayer(null). This is a common technique for delivering second-stage malware. The script's primary function appears to be the obfuscation and preparation of data for execution, likely leading to a payload download.

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` `a67aa00e1402a80871270d893f5b50f896ee0bf4daa686d76a860b56147869ce`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1257 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `b11b7898643b069a8a048772da9817ab63b321d40c2716a58b5a2edce4ffc0fb`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x483	252 bytes
`combined_document_js_000.js` `f3a90a320d47e31e600a1b145f003e4567bf8e56fe676fc7a5f612de46e8a59e`	deobfuscated-js	combined document JavaScript streams at offset 0x160	1510 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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