Files Corrupted During File Transfer

I am connecting to an SFTP site via the SSH node, using the File List node to get the address of the files, and looping through each file individually to transfer to a local folder.

They are pdf files and all of them are corrupted after transfer no matter what I do.

If the files are downloaded from the SFTP outside of Knime, they are not corrupted. However, there are 3700 files located throughout 760 subfolders, so doing this manually is not a desired option.

What can i do to prevent the files from becoming corrupted?