AUP warning during binary file handling

Bug Description
When Claude looks at certain binary files it gives me an AUP warning.

Environment Info

• Platform: darwin
• Terminal: tmux
• Version: 1.0.35
• Feedback ID: 867f8387-5c9d-4953-80a2-629317c7f707

Console

⏺ Bash(head -c 1000 imgcat-output.txt | od -c | head -20)
  ⎿  0000000  033   P   t   m   u   x   ; 033 033   ]   1   3   3   7   ;   M
     0000020    u   l   t   i   p   a   r   t   F   i   l   e   =   i   n   l
     0000040    i   n   e   =   1   ;   s   i   z   e   =   1   5   2   3   5
     … +17 lines (ctrl+r to expand)
  ⎿ API Error: Claude Code is unable to respond to this request, which appears to violate our Usage Policy (https://www.anthropic.com/legal/aup). Please double press esc to edit your last message or start a new session for Claude
    Code to assist with a different task.

Can you explain why the first 20 lines of a hex dump of a capture of imgcat would violate the AUP?