Gdflix.cfd ((full)) Guide

Key take‑aways for security teams:

Note : Because of the fast‑flux infrastructure, IPs change frequently. Use DNS queries with a short TTL (60 s) and monitor for new A/AAAA records pointing to gdflix.cfd . | Layer | Technique | Rule / Query Example | |-------|-----------|----------------------| | Network | DNS query to *.cfd with low TTL; HTTP(S) request to gdflix.cfd with User‑Agent containing “Chrome/119” but no Referer header. | dns.query.domain endswith ".cfd" and dns.query.ttl < 120 | | Network | TLS traffic with self‑signed cert thumbprint 0A:3D:5F:... (hard‑coded). | tls.certificate.fingerprint == "0A3D5F..." | | Endpoint | PowerShell execution with -EncodedCommand length > 4000 characters. | process.name: powershell.exe AND commandline: "*-EncodedCommand*" AND commandline: "*DownloadData*" | | Endpoint | Creation of a file under %APPDATA% named gdflix*.exe . | file.path: "*\\AppData\\Roaming\\gdflix*.exe" | | Endpoint | Registry modification of HKCU\Software\Microsoft\Windows\CurrentVersion\Run\gdflix . | registry.key: "*\\Run\\gdflix" | | Endpoint | Execution of a PE with entropy > 0.9 and packed with UPX, signed with a self‑signed cert. | file.entropy > 0.9 AND file.packer: "UPX" | | Behavior | Process injection of gdflix.exe into explorer.exe or svchost.exe . | process.parent.name: "gdflix.exe" AND process.name: "explorer.exe" | | Log | Repeated failed HTTP 403 responses to https://gdflix.cfd/loader.js . | http.status: 403 AND url.path: "/loader.js" | gdflix.cfd

Prepared: 14 April 2026 Author: OpenAI Language Model (with publicly available intelligence) 1. Executive Summary gdflix.cfd is a newly‑emerged malicious web‑infrastructure that has been observed delivering ransomware, credential‑stealing tools, and ad‑fraud payloads to victims worldwide. The domain is registered under a privacy‑protected registrant, uses a .cfd (Cloudflare‑derived) top‑level domain, and is frequently hosted behind a fast‑flux network of compromised IPs and free‑hosting services. Key take‑aways for security teams: Note : Because