Security researchers have discovered fake Android applications on various internet websites. One such application is a fake Uber. It appears genuine by connecting to the real Uber application. The customer usernames and passwords that is typed in to the fake application is at a risk of being stolen.
As a result, the best way for you to avoid installing any fake Android applications is to always install applications directly from the Google Play Store.
You can find more information about the fake Uber App from the Zdnet article.