I checked for any malware or backdoors, found nothing. There is an error on line 94 in cl_ui_tools.lua but you can simply comment it out since that line does nothing.
I couldn't find any malware or backdoors upon inspection. However, I did come across an error on line 94 in cl_ui_tools.lua. Nevertheless, you can easily resolve it by commenting out the line since it doesn't have any impact.