I have receve that same mail,when open attachment there is WalletBitcoinPaymentMethod.jar  43,0 KB

Did you use your mail on moneymaker group,when i have logged on that site with this adress i receved few this attachments with messages like you have been paid on your acc 1,6 btc,or here is wallet .dat i dont know how to open it on it you have 3btc or you have earned btcs etc,this one is last We Are sorry to learn you , you wallet has been stopped for 10 day's for security reason .