I get a page tile (or a tab title if using tabs) of;
Microsoft Word - Oracle_Clusterware_12c_WP - oracle-clusterware-12c-overview-1969750.pdf
I have cleaned my my recent history of "cookies" and "cache" without it making any difference. The title seems to be created by the PDF previewer. If a title must be created then it should just be the doc title itself or a combination of the doc title and file name. It should not include the authoring tool.