PDF editors -A past thing
There is an extension called PDF import for libre office.Using it you can edit PDF documents in libre office writer. Installation: You can install it from the software-center by searching for pdfimport . OR You can install it from the terminal by typing sudo apt-get install libreoffice-pdfimport Remember you need Libre-office installed to use this extension. :) Also there is a similar extension for open office too. You can install it by searching the same as above in software-center OR install it from the terminal by typing sudo apt-get install openoffice.org-pdfimport