"Salamat PRRD" is a book written by President Rodrigo Duterte, also known as PRRD, which is an abbreviation of his name. The book, officially titled "Salamat PRRD: A President's Notes on Good Governance, Discipline, and Results", is a compilation of his speeches, messages, and notes on governance, leadership, and his administration's accomplishments.

The book "Salamat PRRD" is available in various formats, including paperback and e-book. As for the PDF format, I found that it is indeed available online, and you can access it through various sources.

If you're unsure about the authenticity or legitimacy of the PDF copy, consider purchasing a physical copy or checking with official government sources.