Hello. I can help you with your problem.
I am system administrator with 9 years experience.
My core competency is FreeBSD and Linux.
I have experience in general system administration, mail servers, VPN, VOIP, LAMP, virtualization.
I'll check your site with antimalware script, check differences with clean wordpress files(your files can be corrupted), check database and repair all damaged files and base.
I need ssh access to your server or archive with site and database.