PDF malware analysis — malicious · 2e75e387b248aea6

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: 50e4ac78464aa48d6ddec598cb7ce094 SHA-1: a4c229a97eba743b5ec6d53d2bf6aa7f2caffe72 SHA-256: 2e75e387b248aea6f4a96a56e2fe5a52548d2622f97eedad99357a5d5db30059

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, and utilizes the unescape function. A critical heuristic firing indicates exploitation of CVE-2009-4324 via media.newPlayer. The embedded JavaScript, particularly the javascript_obj0013_001.js file, is obfuscated and likely responsible for downloading and executing a second-stage payload. The presence of Scribus metadata suggests a potential vector for document creation.

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` `a18a8f521872327d69ec0a56f4040b9f5d8c4d9f47d489e2a546e4c59c6f0eea`	pdf-javascript-stream	PDF /JS object 1 at offset 0x16	34 bytes
`javascript_obj0013_001.js` `0d3d3e7227536e3392e7003dd36e9a3c8a871ef592cb03e52ca52c0016cf544a`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3A6	2618 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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