Label: PNG signature from the PNG specification, section 5.2, as eight bytes.
The file benign-note.txt is those eight bytes followed by a small authored PNG datastream.
Historical 2026-10-12 classifier record: file(1) reported PNG image data, 1 x 1, 8-bit/color RGB, non-interlaced. This card does not use a separate image decoder.

Offset 0: 89 50 4E 47 0D 0A 1A 0A
Bytes 89 is outside ASCII. Bytes 50 4E 47 are the letters P N G.
The download name ends in .txt. The name is a label.