I found this update for OS X about the Flashback trojan and for some reason there is no download button for it : http://support.apple.com/kb/HT5242
For comparaison / example, this one has a download button : http://support.apple.com/kb/DL1517
HT documents are designed to give you information only. DL documents describe downloads and have a download button.
Since you found the Flashback malware removal tool for Lion users that don't have Java installed, I take it you do have Java installed and are looking for Java for OS X Lion 2012-003. But that was supperceded by Java for OS X 2012-004.
Having said all that, you don't need to download any of them. If you keep running Software Update until it tells you there are no more updates then you have done everything you need to do to check for, remove and protect you against Flashback, at least for now.