i don't know how to convert pdf to ppt but i can give you some advices in converting pdf to word because i always do such a work. you may try adobe firstly but i have ever tried but failed eventually. so i turned to some third party software which contains the function of converting pdf to many other formats . this sdk can do pdf to word conversion in c# ,net. vb, etc. as for ppt, i know some softwares are professional in such conversion , you can search on google. good luck.
