PDF malware analysis — malicious · 2cb2a93bbafa1db6

MALICIOUS

PDF

2.8 KB Created: 2011-23-50 42:02:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 8defe081c404597186efd66cdfb2bca3 SHA-1: 6d5d9e5e0ac7cabdf170d44c3b0902ce54d6602f SHA-256: 2cb2a93bbafa1db6706bc68e1166752e64eb2e97eb93397dd7376580635775dd

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1059.007 JavaScript

This PDF document contains embedded JavaScript and triggers an OpenAction, indicating it's designed to execute code upon opening. The critical CVE-2007-5659 heuristic firing specifically points to the use of the Collab.collectEmailInfo method, a known vector for exploiting Adobe Reader vulnerabilities. The embedded JavaScript stream, although obfuscated, likely contributes to the execution of a malicious payload. The confidence is high due to the specific exploit identified and the presence of JavaScript.

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. (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` `3dad84ba926f0b45696f6efef315d62519e2d464a5a635a5a7951cb6d0ba4b8d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x363	3644 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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