A direct link to a digitized version of the Urdu text.
Imam Khomeini wrote this book as a systematic refutation of a pamphlet titled The Thousand-Year Secrets ( Asrar-i Hazarsala ) by Ali Akbar Hakimzadeh. Hakimzadeh's pamphlet attacked traditional Shia practices—such as the mourning of Muharram and the concept of intercession—labeling them as superstitions. kashf ul asrar imam khomeini in urdu link
For the authentic Urdu translation of Imam Khomeini's Kashf al-Asrar , you can refer to these digital repositories: A direct link to a digitized version of the Urdu text