Why would you type in the full URL into a search, what is the purpose in that ?
Surely you should simply search avast or avast.com to see what results are brought up, what is your primary search engine, e.g. what is set-up in your browser ?
A search for viruskillerpro.com returns only 8 hits on a google search so it is very well known NOT. The site is a bit of a joke almost work in progress, with empty sections, but nothing much there no alerts.