Pakistan State Sponsor of Terrorism Designation Act of 2017 This bill directs the Department of State to submit a determination regarding whether the government of Pakistan, including any of its agents or instrumentalities, committed, conspired to commit, attempted, aided, or abetted: (1) any of specified acts constituting an act of or support for international terrorism, or (2) any other act that constitutes an act of or support for international terrorism. Within 30 days after making such a determination in the affirmative, the State Department shall report to Congress: (1) a determination on whether Pakistan is a state sponsor of terrorism, or (2) a detailed justification as to why Pakistan's conduct does not meet the legal criteria for such designation.