While it is rare for an individual downloader to be sued (music publishers typically go after the uploaders or the hosting sites), it is not impossible. Copyright holders can sometimes trace IP addresses via torrents associated with PDFcoffee links. Universities have strict academic honesty policies that penalize the use of pirated educational method books.
While the platform itself is technically functional, it operates in a "legal gray area" that poses several risks to users: 1. Copyright and Legality hal leonard pdfcoffee
If you need help locating sources for a specific Hal Leonard book or song title instead, let me know. While it is rare for an individual downloader