Malware (possible) infected site

Closed - This job posting has been filled and work has been completed.

Job Description

TASK:
To inspect and remove all malicious software/code/other that is affecting the site in question - and also identify and fix the vulnerability to prevent this from happening again.

Description:
One of my sites has possibly been infected by some malicious software according to Google. I need someone with skills and knowledge to inspect the site, and remove any threats and dangers affecting it. I also need you to identify and fix the security issues (as well as possible).

Below is an excerpt from the email from Google regarding this issue, wich also contains information about the site and links to the warning pages etc.

"We recently discovered that some of your pages can cause users to be
infected with malicious software. We have begun showing a warning page to
users who visit these pages by clicking a search result on Google.com.

Below is an example URL on your site which can cause users to be infected
(space inserted to prevent accidental clicking in case your mail client
auto-links URLs):

http://www.gbgdjevent .se/

Here is a link to a sample warning page:
http://www.google.com/interstitial?url=http%3A//www.gbgdjevent.se/";

Please only apply to the job if you have knowledge about Google policies and can begin the task quickly.