Unwanted/duplicate text characters (such as the letter "t") are being added to the report when exported to PDF. A printed report and exporting to text seems to be fine.
After doing some Googling, this is a known, specific issue with Calibri fonts going to PDF. The easiest fix is not to use that font. If you want to dig in and make it work, Google/search this:
calibri font pdfs
and then maybe this:
calibri font pdfs usp10.dll
Here is a direct link to the issue being discussed on SAP/Crystal's site: