An obfuscated URL, also known as a hyperlink trick, is a type of attack where the URL has been obfuscated or concealed to encourage the user to click-through to a spoof Web site rather than the intended destination.
Obfuscated URLs are one of the techniques used in a phishing attack. The spoof site is often an identical clone of the original one and the aim is to trick users into divulging login and other personal information.