I see that your PDF has been made on the hand of Microsoft Word 2013 itself, via File > Save As > PDF.
When you make the PDF with PDF-XChange, in Word 2013, via File > Print, to the PDF-XChange Standard printer, or via the PDF-XChange office-add-in and Convert to PDF, you will not have these brivaplast-logos in the background.
The problem comes from the fact that this logo (picture) has been set as background for your document.
To resolve this:
- open your (Word-)document in Word 2013
- click the Page Layout tab
- click the Page Color icon (in the Page Background group of icons)
- click "No Color" (instead of Fill Effects... > Picture)
Try again to transform your DOCX to PDF via either one of the three methods. The problem should be solved.