{
  "classes": [
    "bad_root_reference",
    "invalid_startxref",
    "missing_eof",
    "scrambled_xref",
    "truncated",
    "valid"
  ],
  "features": [
    "has_pdf_header",
    "eof_in_last_1k",
    "ends_with_eof",
    "startxref_present",
    "startxref_numeric",
    "startxref_points_to_xref",
    "xref_valid_fraction",
    "has_trailer",
    "root_object_exists",
    "obj_endobj_gap",
    "stream_endstream_gap",
    "log10_size"
  ]
}