bloodysuzy on "Internal server error"

Hi community, I have an internal server error on my site. It appaers when you click on any link from my home page.
http://beautifulbrol.com
I found this in my error log:

/home1/beautju4/public_html/new/error_log:
1423284025: /home1/beautju4/public_html/new/ssv3_payload_extractor-DeJzHCxmPm.php startup
1423288331: /home1/beautju4/public_html/new/ssv3_removal_payload-4bcoUKURv0.php startup

Does anyone know how to fix this? I read in another thread that it may be the thirdparty of my webhost that added some plugins during the install...? But still have no idea what to do about it? (also I'm not very techy so please be patient with me :)).

Thanks