I'll try. I'm sure there's a program that can successfully change Flash (.SWF) files to .GIF files, but I can't specify which one exactly, being that there are a vast number, but I'll see what I can do.
*15-30 minutes later*
I honestly don't think you can. I tried using as program to convert it, and I don't know whether if it was the fact that you want to get the Flash file directly from the site. You'd probably have to ask the creator of the file to convert it for you. You can't convert the file because it's not yours. You don't have the file. Sorry.

I have that image as gif, if you want i can post here n_n.
I have used Flash CS4 but I have a problem that no one seems to have an answer? This may be a bug in the software, I don't really know. Here's the problem:
I create a flash movie, including sound clips, and export the movie in an .avi format and the masks won't work.
I export the exact same movie in a .swf format and the masks work but the sound clips don't. The sound clips don't even show as a "blue bar" across the movie as they normally do?
id say just go ahead and download the flash then you can view it whenever unless your trying to make it or sig or something theres no need to make it a gif