PDF book marketing

Does anyone know of a book publisher that will publish electronic books in PDF format?  I wrote a book in Word and converted it to PDF and now find that Amazon, Barnes&Noble, and most others will only publish in EPUB format.  Epub doesn't work for my nonfiction book because of all the sophisticated formatting I used, such as turning some pages landscape and internal hyperlinks.  PDF handles everything great and is compatible with any electronic devices.  Writing the book was easy compared to selling it.