300-215 Question #11: Real Exam Question with Answer & Explanation

The correct answer is C: 255044462d. The magic number (also known as a magic byte) is a sequence of bytes used to identify the format of a file. For PDF files, the standard magic number is: 25 50 44 46, which translates to %PDF in ASCII. Option C (255044462d) begins with 25 50 44 46, confirming it's a PDF file signa

Submitted by the_admin· Mar 6, 2026Cloud Security Operations & Incident Response

Question

Which magic byte indicates that an analyzed file is a pdf file?

Options

AcGRmZmlsZQ
B706466666
C255044462d
D0a0ah4cg

Explanation

The magic number (also known as a magic byte) is a sequence of bytes used to identify the format of a file. For PDF files, the standard magic number is: 25 50 44 46, which translates to %PDF in ASCII. Option C (255044462d) begins with 25 50 44 46, confirming it's a PDF file signature. This is a key forensic detail when performing file type identification and validation of potentially obfuscated or renamed files.

Topics

#File signatures#Magic bytes#PDF format#Forensics

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