I think my site is hacked. Help needed.

As of 3 hours ago, all ads started re-directing back to the homepage. Click on any ad (image thumbs or ad titles) you'll see what I mean:

http://qwikad.com

Does anyone know what it's all about?

I read online that it can be a 500 error hack.

I deleted all folder / files and reloaded the entire site. Still the same issue.

Any help will be greatly appreciated.

 

Are you talking about the adsense ads?

 

Not sure I understand your question. What's wrong with the adsense ads? Do you think they are the cause??

 

I got your question. NO, I am not talking about the adsense ads at all. It's the classified ads on my site. All of them re-direct me back to my homepage.

 

I see. it doesn't redirect the url back to your home page but it just displays the homepage instead of the page it should display. Your other links seem to work. If the site is all custom made you might need to ask the developer, maybe it has something to do with your affiliate tracking system in place if you track users clicking on ads for affiliate commissions then maybe that tracking might be effecting the coding.
Other than that i don't know what someone would gain by going thought the effort of hacking your site just to have your ads not work properly. This leads me to believe some third party plugin or coding you might be using somewhere might have changed.

I hope you find the solution soon

 

I got it. After I figured out how I can debug that script (wheeew), I started debugging it like you suggested @sarahk and the ads finally showed up. Thank goodness! All I did was removing one include that was causing the whole issue. I still think the server was upgraded and that what was causing the issue, in the first place.

 

Happy to hear you fixed it

 

Yeah your site is too huge to be having a problem like that, I am also happy to hear you got it fixed!