PDF malware analysis — malicious · 9559cf7c307b2ddf

MALICIOUS

PDF

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

MD5: 27498a553018ce0c30f50473fef9bd56 SHA-1: fd91e1d7e0cb2d28ced40a70b845ce8e95986580 SHA-256: 9559cf7c307b2ddfcdff59c2a60dbc9e930e3b16de648780501ae4e95eaf3b70

220 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and is triggered by an OpenAction, indicating an attempt to exploit a vulnerability. The critical heuristic firing for CVE-2007-5659 (Collab.collectEmailInfo) strongly suggests this specific exploit is being used. The embedded JavaScript, identified as 'javascript_obj0013_001.js', is likely responsible for downloading and executing a secondary payload, as indicated by the 'Suspicious extracted artifact' heuristic. The ClamAV detection further confirms its malicious nature.

Heuristics 7

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)
ClamAV: Pdf.Exploit.Agent-34662 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-34662
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` `db3164f7c5afad23bf40969c45eaa0ea15d68458c0f0f54473fc3e6c110581f8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x39D	2612 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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