/media/com_sppagebuilder/assets/iconfont/icoezvbby/fonts/fwdvpuf.PHP
/media/com_sppagebuilder/assets/iconfont/icostyddu/fonts/fjcicri.PHP
/media/com_sppagebuilder/assets/iconfont/icoanreov/fonts/fncsnrc.PHP
/media/com_sppagebuilder/assets/iconfont/icocqxyek/fonts/fscpdrg.PHP
Your Server got hacked. Only deleting the php files which are Webshells, does not solve your problem.
If you have a backup, level the entire site and use your backup and update EVERYTHING !
If you do not have a backup, you might hire someone to fix your problem.
Maybe it is not fixable, dependig how long the sever was open unprotected and undetected with that hack.
good luck