PDF / .PHP malware analysis — malicious · c22fe62aa7c77b9a

MALICIOUS

PDF / .PHP

4.6 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: eb7271bc46cb1f0df5a23b10af7da999 SHA-1: 871d4bdc39f704e77d8426b1dfde1a00509287d8 SHA-256: c22fe62aa7c77b9ae758e9f7855b89278bd08f9a88c877b28a22c9c6ee52b883

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The unescape() call and ML classifier strongly suggest malicious intent, further confirmed by ClamAV detecting it as Pdf.Exploit.Agent-13215. The embedded JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-13215 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-13215
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_obj0006_000.js` `5346eb1252363638dd9a6894c9318e65ef755921b939d3082b30c72c209324f5`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF93	165 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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