You double-click facebook.rar . WinRAR or 7-Zip opens. Inside, you see:

Every day, thousands of people search for a magic file that promises to unlock the secrets of Facebook—whether it is a database of leaked passwords, a "hacking tool," or a cached version of a private profile. The reality, however, is far less exciting and infinitely more dangerous.

Check your credit report (AnnualCreditReport.com in the US). Watch for unusual login alerts. Consider signing up for an identity theft protection service.