PDF malware analysis — malicious · 8baebc488a157da3

MALICIOUS

PDF

1.4 KB

MD5: 252cd3ff4bd7b057f13f625264d152ef SHA-1: 8759ded8961564b95760deefb572148554ce7862 SHA-256: 8baebc488a157da3f3cff057d37e556e57797cdbff53adb61f3e6b2e66b6ed15

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, which is triggered by a CVE-2009-4324 vulnerability related to media player handling. The JavaScript is obfuscated and uses unescape() calls, indicating an attempt to hide malicious code. The primary intent appears to be the execution of this JavaScript, likely to download and execute a second-stage payload.

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` `98122ccc3dbf01255bffea78fe76ee3b0f2c724235e9fae3682fb57cd223b930`	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` `84de6a68f3d928bfb58854e345ed7174d91156e915bd20ee9b9041777ae96621`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x486	251 bytes

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