PDF malware analysis — malicious · 9dbefed0ab972a6d

MALICIOUS

PDF

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

MD5: d8d197a93554095074e37815f3f0fee5 SHA-1: dc1f23b5cbc938f41ab0fd5bc8ec0caf0863214d SHA-256: 9dbefed0ab972a6d21a18b08733537e7faf5b2c718d088c933d2753c7a61739b

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF file contains embedded JavaScript triggered by the OpenAction, which is a common technique for exploiting vulnerabilities. The critical CVE-2007-5659 heuristic firing indicates the use of a known exploit targeting Adobe Reader's `Collab.collectEmailInfo` function. The embedded JavaScript stream, identified as `javascript_obj0013_001.js`, is likely responsible for downloading and executing a secondary payload, although its exact function is obfuscated. The presence of `unescape()` further suggests code obfuscation.

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` `ddd51b4862aec8ea87cc9077f5c7cb33d3a467df76c28150d0f98dd78a40b284`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36F	3321 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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