Hello Zach Zach ,
it's not ordinary malware, i could be add ware which is harm your browser or rendering issue of your GPU
lets check it out
1) Reset Browser
2) Change the browser and check whether issue been solved
3) Update your malwarebytes if available and re-scan your PC
4) if above steps not works for you just connect your laptop to external monitor/ Display and load the browser and check the functions
5) if external display also having same problem you may try to update your graphics driver
6) clean the RAMs and recheck
7) install the OS and check
8) if non of above steps not works for you update the model number and we can help you to do hardware repair in graphics section
Cheers!