@RaisingK The above is not an image sample as we define it.

From Image Sample (emphasis added):

This tag applies to any post whose MD5 hash matches a sample size but not also the original size.

• Danbooru:
• Image link: https://danbooru.donmai.us/data/cc33494584c247a5e3338a527ed82c88.jpg
• MD5 hash: CC33494584C247A5E3338A527ED82C88
• File size: 152,341 bytes
• Pixiv:
• Image link: https://i.pximg.net/img-master/img/2018/06/09/14/29/23/69108286_p0_master1200.jpg
• MD5 hash: 46D20EE98C110FD12A22CB87BD52BA31
• File size: 611,328 bytes

It's true that the image dimensions of the two match up, and ASCI2D seems to confirm that that particular MD5 hash did exist on Pixiv at some point (https://ascii2d.net/search/color/cc33494584c247a5e3338a527ed82c88), however it doesn't have any current active image link (AFAIK) that can be sourced from Pixiv, where said image link is one of the sample sizes that Pixiv provides.

From how I've been treating posts with my scanner, if an image has an active post but the MD5 does not match, then it only gets MD5 mismatch even at some point in the past it was image sample. Likewise, if both the image link and post links are dead, then it only gets bad ID and none of the other tags.

To sum it up, the md5 mismatch, image sample, and bad id tags are all mutually exclusive to each other.