File format validation

A computerized system for determining trustworthiness of a file by file format validation, the system comprising:

• a memory storing executable instructions;
• and
• a processor, coupled to the memory, that performs a method by executing the instructions stored in the memory, the method comprising:
• receiving, by the processor, a file, the file having:
• a file format type;
• a header having a first header block with a first description representing attributes of a first portion of actual content in the file;
• and
• a first content block having i) first leading bytes representing the attributes of the first portion of the actual content in the file and ii) the first portion of the actual content in the file;
• parsing, by the processor, data from the first description of the first header block, the first leading bytes of the first content block and the first portion of the actual content;
• comparing, by the processor, i) the data from the first description to the data from the first leading bytes, ii) the data from the first leading bytes to the data from the first portion of the actual content, and iii) the data from the first description to the data from the first portion of the actual content;
• and
• based on the comparison, validating, by the processor, the file format type when the data from the first description, the data from the first leading bytes and the data from the first portion of the actual content are consistent with one another.