PDF malware analysis — malicious · 0ed28cc02a21ec45

MALICIOUS

PDF

2.7 KB

MD5: 73ff97a61e4482c037eedb13382ec58d SHA-1: bb9291c8cfda1ea711b3c445c104c254ec737037 SHA-256: 0ed28cc02a21ec453bc30ed2d0d8bd8cf19cc54d619f09e6bb9e8d227972b05b

208 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript that is designed to exploit a known vulnerability (CVE-2009-4324) within PDF viewers. The JavaScript utilizes an eval() call and string concatenation to construct and execute malicious code, likely to download and run a secondary payload. The ML classifier strongly indicates 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` `46d51448adfd3ceeae477ea44028039a120e8479938b12e6a55f03ec02c6ded3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	2230 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` `3b9df4bf3cc3edecab8e9ffde3790420296c8f6c148aba101e1ff05c0d11f2e7`	deobfuscated-js	combined document JavaScript streams at offset 0x117	2478 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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