PDF / .TXT malware analysis — malicious · ad0ad17149b5c350

MALICIOUS

PDF / .TXT

4.2 KB Created: 2008-08-03 07:51:49 -09:03 Authoring application: Adobe InDesign CS3 (5.0) (via Adobe PDF Library 8.1)

MD5: f2f43ac1b974d442696f33da1b9deaf7 SHA-1: 7158277f32e2dca0847b523719e67084b57952ff SHA-256: ad0ad17149b5c350155960947e87106f63afaf39085b6fd102c76a028e8944ee

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript that is heavily obfuscated. The ML classifier strongly indicates maliciousness. The script appears to deobfuscate and reconstruct a URL, which is then likely used to download a second-stage payload. The reconstructed URL is http://78.26.179.61/gDJozVF.exe?id=0&sid=87b184b480b785b684b588fb89ec81e087ba8fbe8bba8dbcb1&e=98, which is a suspicious executable download link.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://78.26.179.61/gDJozVF.exe?id=0&sid=87b184b480b785b684b588fb89ec81e087ba8fbe8bba8dbcb1&e=98

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `8ddf2115f3ce231d1fa7423db610ab1171826ce9e223c94439d6a9e38d03b05e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3DA	2703 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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