PDF malware analysis — malicious · 8c404b4996d0ab55

MALICIOUS

PDF

2.7 KB Created: 2009-22-11 04:00:00 Authoring application: Neon v.1.0.5 ru (via Neon v.1.0.5 ru PDFLib)

MD5: 4e57b6a7a5fced56c1f5c080c2b42c5d SHA-1: ff16fab9be28accfd4c4e404f66222028d056935 SHA-256: 8c404b4996d0ab55b40f9010b0bef41e1209f1a98c16688e0e408ff810706f07

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript triggered by an OpenAction, which is a common technique for exploiting vulnerabilities. The heuristic 'CVE_2007_5659: Collab.collectEmailInfo' specifically indicates exploitation of CVE-2007-5659. The embedded JavaScript file 'javascript_obj0013_001.js' is highly suspicious and likely responsible for downloading and executing a secondary payload. The confidence is high due to the specific CVE identified and the presence of executable JavaScript.

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)
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` `08776b62fcb0d4719db2aba8d3a953dbc62283a1ce9fc30096aba81cbd135847`	pdf-javascript-stream	PDF /JS object 13 at offset 0x369	3333 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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