You dont tell us what avast say…but if it is UR:mal it means url or IP adress is on a blacklist
https://www.virustotal.com/nb/url/801d8e1b150c6467f87faa216a4d06d756d0a7aa0c21f07decdf00ec04cd045e/analysis/1397760615/ http://www.urlvoid.com/scan/kekofan.com/