I'm programmer and i have a website that allow the user to upload there html website on it 

I mean the user will zip his folder and in  one click he will upload his folder to my website and it will showing up as sub domain for his html .

by sure I didnt allow for php and some other extension (only html and some stuff )


the problem that i have now 
there is some bad user  they are trying to upload some html file with  social engineering  contain ( facebook login , paypal ect ) 


and google always  send me a notification about those harmful links 
and ask me to find a solution and remove the contain 


as a programmer the only solution that i have is   checking the file by myself  manually  and it's so hard to do it . 


anyone have a solution for this problem ? ? 
I found some free hosting that detect some social engineering contain immediately