: High entropy often suggests that the data inside is encrypted or packed. 3. Dynamic Analysis (If Executables are Inside)
: Run strings on the ZIP file. Sometimes metadata, comments, or even clear-text flags are visible in the binary data before extraction. 2. Static Analysis
Extremely high compression ratios (which might indicate a "zip bomb"). Nested archives (archives within archives).
: List the contents without extracting ( unzip -l ). Look for: Unusual filenames or extensions.
: Check for data hidden in the "Extra Field" of the ZIP local file header or after the End of Central Directory (EOCD) record.
