Dynamic section

Contains a lot of different flag masks.

Seems to be a GNU Binutils extension

Determines if an executable is a position independent executable (PIE).

Seems to be informational only, since not used by Linux kernel 5.0 or glibc 2.29.

file 5.36 however does use it to display file type as explained at: stackoverflow.com/questions/34519521/why-does-gcc-create-a-shared-object-instead-of-an-executable-binary-according-to/55704865#55704865