First delete unwanted codes from your site and than go to your Google webmaster tool and request for reconsideration.
I think they got me via joomla how ? I had another version in my server of mysite using joomla, but I just rename the folder from Public_html to let say public_html_old when I scanned my site it warned me there is a virus there, I deleted it all, but I found that they put their code in every single page... so I do not think we blame wordpress for this matter... or ?
thank you Yes, I found them, they were inserted in every page !!! the best is I will delete everything and start again, IF you say that the database could be also infected... so no need to take a back up ?
Of course you should back up everything, even with all that mess. You never know, if you misplace some code and your website won't work, at least you'll have a backup (even though infected one). And remember, Google provides only partial list, there might be more files infected. Where do you host your files? On your own server or company's? If you cannot afford to clean up your pages, you should definitely secure your server or ask hosting company to do it.
ya these attacks are getting really common. its like a new phenomenon for "hackers" because it is so easy. I found some really good articles that helped me unblock my site. I used the info on this page to fix the issue http://www.fixreportedattacksite.com/fix-reported-attack-site which helped greatly. After it was clean i request my site to be reviewed and it only took 14 hours for my site to get back up. To prevent future attacks from happening I have followed the info on this page http://www.fixreportedattacksite.com/prevent-reported-attack-site Hopefully this will help anyone that has landed in the same boat i was in a month ago.