Fake profiles on Facebook has been there since forever, there maybe various reasons a person creates fake profiles on Facebook, including spying on other, spreading viruses, etc. the sole is reason to be friended with you.
Do not worry there are heuristics which can help you identify the Fake profiles from the real ones.
97% of the fake profiles identify them as female.
Fake profiles have an average of 726 friends.
Some more traits of fake profiles on Facebook are shown in the below infographics, Check out