PDF malware analysis — malicious · 376b4463fe5bca07

MALICIOUS

PDF

10.7 KB Created: 2009-12-17 16:59:10 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 45c59a875673261658f6497bf723ce5d SHA-1: a207fe8eee05fa7389a0c8e00ab034d61b14e036 SHA-256: 376b4463fe5bca07925b69adadcd4f3c22af36cdc566bf770c6ed3f7586ad33b

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic identified the 'CVE_2009_4324' vulnerability related to media.newPlayer, suggesting the JavaScript is used to exploit this flaw. The presence of 'unescape()' further points to obfuscated JavaScript code. The primary intent appears to be exploiting this CVE to execute arbitrary code, likely to download and run a secondary 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0021_000.js` `178f2ff8fbc3ee665783f8483f2a990aab1573096c49a18cae0b984719777be9`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	17632 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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