download-installer.cdn.mozilla.net - URL scan, 21 Aug 2026
MalwareAnalyzer by Cyble scanned download-installer.cdn.mozilla.net and returned a unknown verdict (score -12). The page resolved to 199.232.139.19 on Fastly, Inc. in AU. The domain was registered 10429 days ago through MarkMonitor Inc.. 1 domain and 1 IP were contacted. 1 malware sample communicates with this URL (Zusy). This is a point-in-time observation from 21 Aug 2026; the page may have changed since.
Scan result
- Verdict: unknown (score -12) · Confidence 15%
- Scanned URL:
https://download-installer.cdn.mozilla.net/ - Domain: download-installer.cdn.mozilla.net · IP: 199.232.139.19 · AS54113 · AU
- Server: nginx
- Page title: Directory Listing: /
- HTTP status: 200 · text/html; charset=utf-8
- Registrar: MarkMonitor Inc. · domain age 10429 days · created 1998-01-31
- TLS issuer: C=US, O=Let's Encrypt, CN=YR1 · valid to Nov 5 14: · subject CN=archive.mozilla.org
- Scan tier: fast · observed 2026-08-21 15:15:11 UTC
Malware communicating with this URL (1)
These samples were observed contacting or being served from download-installer.cdn.mozilla.net. Each links to its full analysis.
- Zusy - contacted ·
1294bcc0aad6e4319ed471b44a6fbb98· first seen 2026-08-21
Antivirus & YARA (0 of 47 engines)
No engine flagged this page's content.
Why this verdict
- Valid TLS, no impersonation or off-origin credential post
Detected technologies
- Nginx
- Fastly
Contacted infrastructure
- 199.232.139.19 - AS54113 Fastly, Inc. (Australia)
Observed indicators
- download-installer.cdn.mozilla.net
- 199.232.139.19
- https://download-installer.cdn.mozilla.net/
- https://download-installer.cdn.mozilla.net/pub/
- https://download-installer.cdn.mozilla.net/favicon.ico
- https://download-installer.cdn.mozilla.net/robots.txt
Questions about download-installer.cdn.mozilla.net
- Is download-installer.cdn.mozilla.net safe?
- The scan of download-installer.cdn.mozilla.net on 21 Aug 2026 reached no verdict either way (score -12). Too little was captured to judge it, which is an unknown rather than a pass.
- What malware is associated with download-installer.cdn.mozilla.net?
- 1 analysed samples communicate with this URL, including Zusy.
- How was download-installer.cdn.mozilla.net checked?
- A static pass resolved DNS, captured TLS and headers and followed the redirect chain, and where the fast tier allows, a headless browser rendered the page and recorded every request. Egress is SSRF-locked. Signatures that matched only page text are weighted far below one that matched a served file, because a page documenting malware matches the same rules.
Scanned at the fast tier - see how URL scanning works.
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