See: https://asafaweb.com/Scan?Url=apps4054.mzv8p.org with a fail and two warnings.
Blacklisted: http://killmalware.com/apps4054.mzv8p.org/# & https://sitecheck.sucuri.net/results/apps4054.mzv8p.org
(thrice) Flagged: https://www.virustotal.com/nl/url/69f05ec266d4aff37c9feef2bf32cd5206a5a5a54b9e9ac7b64d859805e74435/analysis/
On IP: http://www.urlquery.net/report.php?id=1485027980718
Dangerous link: -http://apps4054.mzv8p.org/?foo=<script> →
window.location.replace(“/web/”);→ http://www.domxssscanner.com/scan?url=http%3A%2F%2Fapps4054.mzv8p.org
consider input fields and form controls…page error will cause that you will be redirected to the 404.aspx custom error page instead
polonus (volunteer website security analyst and website error-hunter)