pdf document properties -- pdflatex

If you are using pdflatex and to set the document properties of the generated pdf. Here is a link which says how to do it: link.
Just include this in your .tex file

\pdfinfo{
  /Author (Author name)
  /Title  (Title of the document)
  /CreationDate (D:YYYYMMDDHHmmss)
  /Subject (how to edit the pdf doc properties)
  /Keywords (word1, word2, word3)
}