is very nice. but I think its more fit for a file icon, not for the application. I'd say, look at the others: it doenst fit in. its a button. it's like kword a bit, but just not really... no, I dont think this is the best, but close. and perfect for file association.

nice work :) great job...

I like it, but it would look better if you would make it bolder ("KPDF" and "serpentintes").

but keep in mind that it must also be recognizable at 16x16 or at least at 22x22. If not, think of an alternative small icon.