strings 2020-Linux-Foundation-Annual-Report_113020.pdf | grep Adobe | wc -l然后一行未被剔除的陈旧信息,进一步佐证了他的判断:
/Title (Annual Report 2020) /Producer (macOS Version 10.15.7 \(Build 19H15\) Quartz PDFContext)[attach]55332[/attach]
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