PDF malware analysis — malicious · d35922dba5b9b402

MALICIOUS

PDF

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

MD5: a14e8db4969303a9e63d745ba22a16e6 SHA-1: d417fb27d3a1b6c75c3f9cdb4babd192cc527c7f SHA-256: d35922dba5b9b402d4d920cb99ece5979c7db69227bc6397624ff0c11d63af22

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and is configured with an OpenAction trigger, indicating an attempt to automatically execute code upon opening. The critical CVE-2007-5659 heuristic firing points to the use of the Collab.collectEmailInfo method, a known vector for exploiting Adobe Reader vulnerabilities. The embedded JavaScript stream, identified as 'javascript_obj0013_001.js', is likely responsible for further malicious actions, such as downloading and executing a secondary payload. The use of unescape() further suggests obfuscation of malicious JavaScript 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` `d98c31195d03b1675711c1e9a3be729782d5192051d8c1c3bcf9505d78e5435c`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36B	2694 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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