PDF malware analysis — malicious · ab9d2fb0a6340db1

MALICIOUS

PDF

2.7 KB Created: 2008-11-12 08:25:40 Authoring application: Neon v.1.0.5 ru (via Neon v.1.0.5 ru PDFLib)

MD5: f693e9025bd4fa57fcfeed4db2b7fe3b SHA-1: 2878e5fbb1217e1fcd424f7ed220db9e19b222df SHA-256: ab9d2fb0a6340db1350a01eecc3d5d5723bdb928ed2bb6e90c226271c3f2e8e1

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 to trigger its execution upon opening. The critical heuristic firing for CVE-2007-5659 (Collab.collectEmailInfo) indicates exploitation of a known vulnerability. The embedded JavaScript stream, identified as 'javascript_obj0013_001.js', is likely responsible for downloading and executing a secondary payload, contributing to the malicious verdict.

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` `bb17b79f4a7f7ccd0d6b5faefc275bb788cbe114b4bce0c5d6901cdc0566c6e6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36A	3405 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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