The majority of shared links lead to:

To ensure a safe and secure download, fans should rely on reputable sources, such as official publisher websites, Google Drive links shared by trusted communities, or well-known e-book retailers. By taking these precautions, readers can enjoy their digital copy of The Ballad of Songbirds and Snakes without compromising their device's security or supporting illicit activities.

Scholastic has never released an official, free, exclusive PDF of The Ballad of Songbirds and Snakes for public download. The only authorized digital formats are:

I'm assuming you're referring to the e-book version of "The Ballad of Songbirds and Snakes" by Suzanne Collins, which is a prequel to the Hunger Games trilogy.