PDF malware analysis — malicious · fe5256d9dad907c8

MALICIOUS

PDF

3.7 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 61ac62ef2879e4ce1682f730f2015f09 SHA-1: 66240d9ec9586d71fd51e10c661936a3ca214b83 SHA-256: fe5256d9dad907c8dd4ab4475c00a5dd55d029c51a717bee542fa97cf18abaa9

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript triggered by an OpenAction, which is a common technique for exploiting vulnerabilities. The critical CVE-2007-5659 heuristic firing indicates the use of the Collab.collectEmailInfo method, a known exploit vector. The embedded JavaScript stream, named 'javascript_obj0013_001.js', likely contains obfuscated code designed to download and execute a secondary payload, contributing to the overall malicious intent.

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
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `671a8c6671889d546b035120ed726f208ad42312218daa25b455e57eff05a0fc`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D9	2183 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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