Answer
No — Output Channels don't support genuine PDF output at all, and simply renaming an exported file's extension to .pdf doesn't actually convert its underlying format; a CSV (or similar comma-separated text) file renamed to .pdf is still fundamentally a text file, not a real PDF, which is why it opens as garbled content in a PDF reader. Export the data in one of the genuinely supported Output Channel formats instead, CSV, XML, text, or HTML, and then convert that output to true PDF using a separate third-party conversion tool, since Output Channels themselves have no native PDF-generation capability.