PDF malware analysis — malicious · ebb2584ff113b803

MALICIOUS

PDF

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

MD5: 959fdef6d35cb6608d8e307d8ab433f8 SHA-1: b394fcf5479615d505d09ebfe9dd3ced56fdecb1 SHA-256: ebb2584ff113b803cb6b72aa6d9f6c42c58c1da0359a0186ef1cc507a5d3c049

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and an OpenAction trigger, indicating an attempt to execute code automatically when the document is opened. The critical CVE-2007-5659 heuristic firing specifically points to the use of Collab.collectEmailInfo, a known method for exploiting vulnerabilities in older PDF readers. The extracted JavaScript, though obfuscated, likely contributes to the exploit chain. The file is identified as malicious with a high risk score.

Heuristics 6

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `7d39cd84fff4746f7a43f2923f93362a8bba1a6833ddd87b53773ae777b50789`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D9	2135 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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