PDF malware analysis — malicious · ce7c42d4c32f2e16

MALICIOUS

PDF

4.1 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 92f311d710ae853cfe61620338a40ef1 SHA-1: 45477a6bbd3529b43c9d2dc17b17e3a4f0b1d327 SHA-256: ce7c42d4c32f2e1602c7eac643e76293bce2349830f012363912e2366df8c052

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, a common technique for exploiting PDF viewers. The critical CVE-2009-4324 heuristic indicates a specific exploit targeting the media.newPlayer function. The embedded JavaScript, particularly the 'javascript_obj0013_001.js' stream, is obfuscated but likely responsible for downloading and executing a secondary payload, as suggested by the 'unescape()' call and the overall suspicious structure. The file's metadata indicates it was authored using Scribus, but this is not directly indicative of malicious intent.

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.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0001_000.js` `e6c77ef6c1f0a4691627f0728ff91126d3fffcb4bd5263692426312dc34ba642`	pdf-javascript-stream	PDF /JS object 1 at offset 0x16	34 bytes
`javascript_obj0013_001.js` `8ba818b1148d889cc56636c50bb5aba850d7e8374b110eb71cec7258c4cb6fd0`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3A6	2664 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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