PDF malware analysis — malicious · 84cd094937cc3e1b

MALICIOUS

PDF

4.6 KB Created: 2008-04-28 12:17:40 +03:00

MD5: d4cff04354314645960321ba833f118c SHA-1: 306e8c0981d0ba5d3d32d70549c57b52b1dfd405 SHA-256: 84cd094937cc3e1b33368fb81a45547b1629dddc3040e9069b5281598e681b96

216 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript that exploits CVE-2007-5659 (Collab.collectEmailInfo vulnerability). The JavaScript is obfuscated and uses unescape() to decode a shellcode payload. This payload is designed to execute arbitrary code, likely leading to further compromise.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 7

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)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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_obj0010_000.js` `b39d5ec4d2d071921f5ceb5896b0e8587dac50e68b3fa3eab999d65a7af33df3`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8F1	1933 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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