No. Both are available for output, but using them as input is hard to impossible.
Re-run the code that created the RTF files with ODS PDF.
Google "rtf to pdf converter"
If you are attempting to convert SAS generated RTF then you should be able to generate PDF output by changing ODS RTF statements to similar ODS PDF statements. (Don't forget to change the file extensions).
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Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.
Find more tutorials on the SAS Users YouTube channel.