Passive DNS and WHOIS lookup (do not query active host if you suspect malware control): check registration date, registrar, registrant email (may be privacy-protected), nameservers, and historical DNS.
TLS certificate observation: query CT logs for certificates issued to the domain or its subdomains.
DNS resolution tests from multiple vantage points (use reputable passive services or controlled environment).
Web content enumeration: fetch HTTP(S) content using a sandboxed environment or malware lab. Save headers and body.
Subdomain enumeration: brute force or use wordlists and passive services.
Threat intel correlation: search threat feeds for indicators, blacklists, or related IPs.
Sandbox dynamic analysis: if you retrieve files or URLs that look suspicious, analyze them in isolated VMs or services.
Reputation checks: check URL/domain against VirusTotal, AbuseIPDB, and similar.
If you are seeing this URL constantly without clicking on links,
it might be time to clear your browser cache or run a quick security scan to ensure no unwanted extensions are triggering the redirects. How to Handle spy2wc.com Redirects