PDF malware analysis — malicious · 2ebbba4ad11a4bb9

MALICIOUS

PDF

2.8 KB Created: 2009-10-05 16:03:14 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: c7db6cb2c3a77bf72c34c67383d58d08 SHA-1: e8dec37ee5ff5ddc4f9787fcc4d1ba9ad3f4d4c9 SHA-256: 2ebbba4ad11a4bb94702a841b0ea5480bd94238bb615dc82d247b69c6b96a2e8

218 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

The PDF file contains embedded JavaScript triggered by an OpenAction, exploiting CVE-2007-5659 via the Collab.collectEmailInfo method. The embedded JavaScript stream, named 'javascript_obj0013_001.js', is heavily obfuscated and likely responsible for downloading and executing a secondary payload. The ClamAV detection 'Pdf.Dropper.Agent-7244864-0' further confirms its malicious nature as a dropper.

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.Dropper.Agent-7244864-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7244864-0
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` `4a39a1aef37160b501cbe396227b0bc2e936b6cfaa84231052a6c20f23f1107d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	2870 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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