有人收過 itune certificate 嗎？

信箱來了一封信：

You have received an iTunes Gift Certificate in the amount of $50.00
You can find your certificate code in attachment below.

Then you need to open iTunes. Once you verify your account, $50.00 will be credited to your account, so you can start buying music, games, video right away.

不過解壓縮之後是exe檔，因為我用mac所以就沒有執行了，會是病毒嗎？