Opened my email today and saw something like "This person shared two files with you". It was dropbox so I clicked it and there were two files. One was "Electrum.exe" other one was "wallet.js".

Is this some kind of virus? This is the first time I'm seeing something like this. May be someone shared it by mistake? If so, I would like to contact that person and let him know but I need to know what it is.