checking a.pdf
PDF Version: 1.3
R = 2
P = -4
User password = 
Encryption key = 897d768fbd
Supplied password is user password
extract for accessibility: allowed
extract for any purpose: allowed
print low resolution: allowed
print high resolution: allowed
modify document assembly: allowed
modify forms: allowed
modify annotations: allowed
modify other: allowed
modify anything: allowed
File is not linearized
No syntax or stream encoding errors found; the file may still contain
errors that qpdf cannot detect
