Безопасен ли tradingschools.org?

A simple download of a pdf was something else it would not open and set-off my firewall. My machine was trying to make out bound connections. Antivirus caught it but had to reset homepage clean . Second site that was on the same google search was also doing something was not as lucky and end up having to reinstall windows second site is ***** I think they are related but submitting report for that too just in case