PDF malware analysis — malicious · d1dbccfdc5f156a2

MALICIOUS

PDF

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

MD5: eb471c4f31d2ab7b7df14514a5b288ad SHA-1: b937894b7058416a08534aef69219e0f10f4dddd SHA-256: d1dbccfdc5f156a26f5f10743992cfe591d6d06aea5349f47d6cc7f371e9ac0e

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and is configured with an OpenAction to trigger it upon opening. The JavaScript utilizes the unescape() function and specifically targets the Collab.collectEmailInfo method, which is known to be vulnerable in CVE-2007-5659. This indicates an attempt to execute arbitrary code, likely to download and run a second-stage payload.

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_obj0012_001.js` `a7752a5cdde817282deb4c85a2e356a0c1c823b4b7953c1fa55bd810a73c1b76`	pdf-javascript-stream	PDF /JS object 12 at offset 0x370	1937 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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