This is 500kB of binary Word trash showing nothing more than 8 print pages of formatted text. Right?
Whatever that monster file has been fabricated for, you can open it in any software able to display Microsoft Office formats and convert it to PDF with any software able to generate PDF from printer data.
If you are really interested in the text of that document and if you insist in using LibreOffice for conversion from one foreign file format into another foreign file format, you may try to select all the text, paste it into a new document which should create a perfect copy without the malware content of the original file bastard.
Last week's topic on the same problem:
viewtopic.php?f=20&t=57108&p=251709&hilit=winword+viewer#p251709btw: I am pretty sure you are not running Linux nor LibreOffice and you are not interested in convering any file at all. This is not the first time I see that file.