Decode Base64 PDF File

I'm looking for assistance in decoding a base64 encoded PDF file. I've already managed to retrieve the base64 code, but I need help with the decoding process to either download or view the file's content.

Key Requirements:
- Decode the provided base64 data into a PDF file
- Ensure the PDF is fully functional and viewable after decoding

Ideal Skills and Experience:
- Proficiency in base64 decoding
- Experience with handling and converting encoded data to PDF format
- Attention to detail to ensure data integrity during the decoding process

If you have the expertise to assist with this task, I would appreciate your help in completing the decoding process.