I find many urls that do not exist on my website when I site my domain. There is not any one of them on my website. When I click these urls, the page redirect to another site. I use wordpress for this site, and I find index.php has been modified. I have recovered this file. Now when I click these urls, it redirects to my home page. But these urls are still remain on google. What was worse, these urls are increasing every day. What can I do? How can I delete these urls on google. These urls are over 200. Do it a big matter to my site for google? I hope some one can help me, thank you.