It is NOT designed to view PDF.
There are plenty of free PDF viewers available on the net.
Please add [Solved]
at the beginning of the title in your first post
(top of the topic) with the edit button
if your issue has been fixed.
AOO 4.1.3 on Xubuntu 16.10, (Yakkety Yak) and on Windows 7 (with winPenPack port).