Each pdf document contains metadata that lists the document title, document author, keyword, software the document has been created with or the date of the creation among other things. These information are usually generated automatically in the pdf editor that was used to create or modify the pdf document.
These pdf editors usually contain the means [...]
Edit PDF Properties
PDF Meta Edit
Like Microsoft Office documents Adobe PDF documents contain meta information that can sometimes reveal information that the author does not want to be accessible by readers. Meta information such as the author name, the application the PDF document was created with or PDF file creation dates are easily accessible by anyone analyzing the document closely.
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