Probably nameserver has resolution issues which produces an invitation an entire server to be compromised.

http://dnscheck.iis.se/?time=1488649116&id=6234270&view=basic&test=standard
http://dnscheck.pingdom.com/?domain=polikarbonat-prom.ru&timestamp=1488649139&view=1

Also check out this http://push2check.net/polikarbonat-prom.ru (have fun clicking on some tabs (it’s scary))