[AlexeyBrin]

If you show the webpage source you'll see hidden divs that contains Viagra links and other things ...

There are two possibilities:

1. OP website was hacked and he has no idea.

2. This page was purposely build with these SEO "enhancements" and the OP knows.

I would love to hear an explanation from the OP about this :).

[TraustiThor]

Hi, I am the owner of the website. I must have been hacked it here are spammy links! How do I get rid of them?

[AlexeyBrin]

It usually depends in what CMS your website is written (like WordPress, Drupal etc ...). You could also ask your web hosting provider if they can help you with cleaning up your website.

Personally, I use a static website generator and I've never had any security problem. I can't give you any particular advice about how you can clean up your website, you could post a question on StackOverflow or do some Google searches once you know in what CMS your website is written.

(From your page source code it seems that you are using WordPress, do some research about cleaning up an infected WordPress site. The first thing that comes to mind is to always keep your WordPress updated to the latest version ... this, however, won't help you now.)

[TraustiThor]

Thank you, I think it is ok for now.

I found and removed the spammy links, and it passes http://www.avgthreatlabs.com/website-safety-reports/domain/t... and it came out clean after I removed those Viagara links in header.php.

I also upgraded to the newest version of wordpress and changed passwords. The hackers might have left a back door, so I will need to reinstall everything.