PDF malware analysis — malicious · 9fefece5cae2d7bb

MALICIOUS

PDF

3.5 KB Created: 2013-05-29 16:16:31 Authoring application: Scribus 1.4.1.svn (via Scribus PDF Library 1.4.1.svn)

MD5: e282cbcb9eff788a29e06a0283b101b0 SHA-1: eaa9ff39f7246e2d59776f85b67cf8f2297c3c6f SHA-256: 9fefece5cae2d7bb1350c59c20412aefcfc2c847bad5712c0ded363b535b46ec

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains embedded JavaScript that is triggered by the OpenAction. The script utilizes the unescape function and printf to exploit the CVE-2008-2992 vulnerability, which allows for arbitrary code execution. The embedded JavaScript is obfuscated and likely intended to download and execute a second-stage payload.

Heuristics 6

util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (matched in decompressed stream)
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 (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_obj0013_001.js` `829a484f8b89af40c88cce72940b653bfafde22fa8b7599e96aa9a04984c16ac`	pdf-javascript-stream	PDF /JS object 13 at offset 0x799	2185 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.