PDF malware analysis — malicious · e9a386d2e3ff78c9

MALICIOUS

PDF

1.4 KB

MD5: 1e95d2827b9b70d65828459f69052387 SHA-1: bae2317eca7a334025405e16a99c776b6204a057 SHA-256: e9a386d2e3ff78c99cbba17a8d25eb238610277b5b01cc96bac281addc3444ff

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the JavaScript is intended to exploit this flaw. The JavaScript is obfuscated and uses unescape(), common for malicious PDF payloads. The primary intent appears to be exploiting this vulnerability to achieve arbitrary code execution.

Heuristics 5

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)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `a0c4937a8d90d81700ee5814c4a230f33464570fdbae688506c1aa8f2ddea0cd`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1264 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` `9312c9b9d127252314cc6bb2072290da688552e572fec918eec088be1981059e`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x484	263 bytes

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