I think my safari is infected with virus, It keeps on redirect me to other website whenever i click my mouse or press any key on my keyboard... HELP!

I think my safari (Yosemite) is infected with virus, It keeps on redirect me to other website whenever i click my mouse or press any key on my keyboard... HELP!

I fail to upload the print screen here, anyway, this is beginning part of the LINK shows up every time it redirecting :

- "ps4ux.com/click?h=Ax722bagzrmWM3RP_5wPSvP63fG7dqaJCNo55LiVexxUaivPBxSeS7A3C2V4 bO-..." -

middle part is hidden with "..."

last part is :

- "ttp:%3A%2F%2Fwww.apple.com%2F&rt=46&date_sid=50fc88582b4e8512b3e35e56351a22a3" in a new tab -