And there we go again with the naming inconsistencies (whoever posted about it not too long ago )...

Timmy's first link - Symantec's site: MyDoom.AH
According to the Symantec site, Sophos calls it Bofra-B. (and MyDoom.AI is Bofra-A)...
But McAfee calls the AI variant AG, CA only got to AF, Kaspersky only AD...

And Sophos calls this interesting one (the one with the attachments) AG, while Symantec calls it AF, and Kaspersky AA... jeebus.