PDF malware analysis — malicious · 83a2deea5d1952cc

MALICIOUS

PDF

2.8 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a78e3164f7c9ffc49be1223e515606f6 SHA-1: 2de05e85d86f0141e1ca94a8b5a97c5d0602ccdb SHA-256: 83a2deea5d1952ccbb832df9ba3c31ba7db3d460d9518c8198f05e8ba4ebae71

158 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.007 JavaScript

This PDF document contains embedded JavaScript and is configured with an OpenAction to trigger script execution upon opening. The critical heuristic firing for CVE-2007-5659 indicates the use of the Collab.collectEmailInfo method, a known vector for exploiting this vulnerability. The embedded JavaScript, while obfuscated, likely contributes to the exploitation chain. The primary attack pattern is to leverage this vulnerability to execute arbitrary code.

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` `161ea8b7726adf1fbabea1a9ab4c2a80f2dbc405c9e84beb83f996216ab18638`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36F	3333 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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