Is this possible? A friend tried to install a rat by sending me a file that looked like `049.jpg.exe` but i didnt click on it cuz of the .exe in the end. 

This was just for fun but it made me Wonder, can you hide a rat completely so The victim doesn't see The .exe? 

If I wanted to give him a rat, would it be possible to make a custom link and hide The rat in it so when he Clicks it he get infected without notice? Like send him an email " your picture `www.facebook.com/089jpg-anthonynude` is violating our rules and we does not tolerate nude or pornographic content. / Facebook "