Why did you attach a PDF file? Many cannot download files from the web so we cannot see what is in there.
If you want to attach text (SAS code or SAS LOG lines) use the Insert SAS Code or Insert Code buttons and just paste the text into the window that pops up.
If you want to attach photographs (perhaps of what screen you are seeing that is red) or of proportionally spaced printouts then use the Insert Photos button, or just paste the image.