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I noticed that you have the Jobs module loaded on your site. A SQL injection vulnerability was found in this module that also needs to be fixed. You can find out more about this problem
here. The problem described in this post is also present in the Jobs module.
Once you get the vulnerability fixed you can begin to go through your site and repair the damage. Once you get the files fixed then clear your /cache and /templates_c directories (except for the index.html file).