More likely just sending you to a Canadian Pharmacy ... If you've got adequate virus protection (or a Mac) opening the attachment likely wouldn't load a Trojan but it was best to simply delete the message (You should ensure it's deleted from your trash as well)
Now, if only, Anonymous or others like them would take on those behind all this crap spam. I don't mean the snakes that deliver these to you, I mean the even bigger snakes who use these tactics to get you to go to their site.