They are just infected files. Scan with an online virus scanner (like Panda ActiveScan) and clean them. It appears that they have tried to disable the antivirus program so I think the best thing to do would be to uninstall Panda (it will delete all the files that were created when you installed Panda meaning all the infected files) then just install it again. The viruses will be deleted from the system and you will have a new Panda AntiVirus program. I suggest you update thoroughly though because non-updated files it probably the reason you got infected with these viruses.