What does it mean by “MAC times”? What are the possible metadata of PDF documents? What...

What does it mean by “MAC times”?
What are the possible metadata of PDF documents? What metadata can you find from 2014 Tax Return Form 1040 from IRS’ website (http://www.irs.gov/pub/irs-pdf/f1040.pdf?portlet=3 )?

Expert Solution

MAC time - MAC time is a set of times that are recorded by the computer system when a file is created. These are metadatas. Metadatas are additional information on a data. This includes the created time, modified time, last accessed time etc. Created time records the time when the data is created and will not change until the deletion of the file. Modification time will be changed to the time when the file is modified most recently. Access time is the time when the file is opened very recently for reading or modifying.

Possible metadata in PDF - The possible meta data of a PDF file are:

Created date
Modified date
Created application
PDF version
PDF producer
File size
Page size
Tagged or not
Fast web view or not
Security details
Protected details like printing, signing, commenting, page extraction etc allowed or not
Page scaling
Duplex mode
Page binding
Language
Base URL
Search index

Here is the metadata of given PDF file

venereology answered 1 year ago

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