Because the liturgy is copyrighted by the Maronite Liturgical Press (Eparchy of St. Maron, Brooklyn), free distribution of the full PDF is restricted. However, legitimate sources exist:
Once you have downloaded your Maronite Mass in English PDF, here is how to make the most of it: maronite mass in english pdf
This is not a "private" preparation by the priest alone. In the Maronite tradition, the preparation is a public act: Because the liturgy is copyrighted by the Maronite