The incubating Apache PDFBox project embeds CMap files (character code mappings) for CJK (Chinese, Japanese, and Korean) fonts in PDF documents. The files are available from http://www.adobe.com/devnet/font/#pcfi and come with license headers like this:
Copyright 1990-2001 Adobe Systems Incorporated.
All Rights Reserved.
NOTICE: All information contained herein is the property
of Adobe Systems Incorporated.
Permission is granted for redistribution of this file
provided this copyright notice is maintained intact and
that the contents of this file are not altered in any
way from its original form.
PostScript and Display PostScript are trademarks of
Adobe Systems Incorporated which may be registered in
The license grants rights to redistribute the files, but does not allow any modifications. Is it OK for Apache PDFBox to redistribute these files unmodified?
Having these files included in PDFBox is highly convenient as they allow PDFBox to work OOTB with PDF documents that contain CJK fonts. Also, I can't think of cases where a user would want to modify the CMap files.