Most Linux distributions such as Linux Mint, Ubuntu, Fedora etc. use LibreOffiСЃРµ as the standard office Suite. If you have not installed LibreOffice, then download it on the link. So, if you have downloaded and installed LibreOffice, start it. On the welcome screen, click the Open File button and select the PDF file you want to edit.
LibreOffice can take a long time to open the PDF. The file will open in Draw, which is part of the package and is used to edit graphics. After downloading, you will immediately receive an open for editing file.
Select the desired PDF page and start to edit. Click on the part of the text you wish to edit.
When you finish editing the file, don't just save the file. Instead of saving, click Export to PDF.
This will allow you to export the edited document back to PDF. Remember this trick and don't save the file, in spite of the constant questions Draw. The program will not save the file to a PDF and exports it in a format open graphics, that's not exactly what we need.
Just note that the resulting PDF file will be reduced in volume. So, the file in the example was recorded from a 1.6 MB file to a 1.4 MB file.