Text in Pdf file out of the right margin, and strange chacarters - libreoffice draw

I have had same problem and this is how I solved it:

1. You have to find what font is used in the pdf file. On KDE you can find it opening the pdf file with Okular.
2. Once in Okular you can see the font has been used under File - Properties (shortcut Alt+Return).
3. Now you have to download the font identified from Internet. Ask Google for the font name.
4. The file must contain a directory called like the font that must copy in /usr/share/fonts/truetype/ (if the font is a true type font).

I hope it works for you.