PDF malware analysis — malicious · 3fe89360b36a9f1c

MALICIOUS

PDF

35.5 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: bb9dbb92dfbf16748a09302335210716 SHA-1: 4d13ddc0a5c1871dc31b296a5468306368a44ae8 SHA-256: 3fe89360b36a9f1c8657d1c62b472986043fea772ac70a57bc04b1909a3e19d0

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript streams, with high-confidence heuristics indicating the use of eval() and unescape() for obfuscation. The JavaScript likely attempts to exploit vulnerabilities within the PDF reader or download a second-stage payload. The presence of obfuscated JavaScript and the use of eval/unescape are common techniques for delivering malware via malicious documents.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a6871a09d83b4deaf4ab7220ee16e9d35e05786273e61267f776cbac1010aae1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35126 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `7ef1a61dd31deeaf94c89e8bf74439891e6bd0fd16ace02fc25373c90865092f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x215	35039 bytes

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