DanMSchell, do you have ssh access to your website (server)?
You may want to request it from hosting support team. Having ssh is quite convenient for managing website. So I'd recommend to figure this out.
Once you get ip/login/pass you can use WinSCP5 free ftp/ssh client and Putty client to connect to server via SSH. Then upload ai-bolit.php files from archive, open a command line and run
Once report is created you need to go though all marked red. They will point you malicious or suspicious code within your wordpress. It can detect major set of hacking software with 90% probability.
Another approach is to get full backup of your website and check it locally. If you're using Windows OS, then just install php on Windows (you can download it from windows.php.net).
Let me know if you've got questions.