It's not so much an attack as a concerted effort to find a spot on the web where these losers can host their warez. There are many large warez forums in Asia, and yes, members on those forums scout FWS for new hosts that they can abuse. When someone finds it, they post it for all to see. Very likely, all the requests you have been getting, dsfreak, have been coming from the same forum.
Since their English is not good, they have one person (usually with slightly better English ability) create a template, so that the users only have to change a few words to signup. I recommend that you filter all e-mails with that template, and if the body of the message is incoherent, don't grant them the request. FWS must take an active stand against warez.