I think we need to be realistic about the
amount of information available. The highest quality version of the original photo that I've found so far has pixel dimensions of 2560 x 1440. The section containing the figure is about 60 x 80 pixels. This is the highest-quality original image I've found:
FIGURE_CROP.png (Size: 5.71 KB / Downloads: 37)
Everything else is based on using software to make the image larger, or to adjust the brightness and contrast. It's important to understand that doing so doesn't add any extra
information - and in fact can be misleading as when we see a larger sized image we may make assumptions and interpret jpeg compression artefacts or image noise as actual picture detail, and also our eye-brain will tend to fill in the blanks and make up things which are not there except in our idealised version of what we think it might be.
I'd go so far as to say it looks like a person seen from behind, in winter clothing, possibly with elbows bent and camera raised to take a photo - but that you see is my speculation - I'm making up things which cannot be seen.
Edit:
I forgot to mention sharpening artefacts. After an image is captured from the camera sensor, it usually undergoes various software processing before we even get to see it. This includes using software to enhance the visibility of edges, by raising the local contrast between adjacent parts of the image of different colour or different brightness. This may be done more than once, first inside the camera, and again in the process of resizing/processing to upload to an online host. When viewed at the intended size, this is mostly beneficial. But when a small section of a picture is enlarged, these sharpening effects get enlarged too, so that the artificial darkening or lightening of individual pixels now becomes artificial darkening or lightening of large sections of the image. But unless one has access to the RAW sensor data before processing (highly unlikely in this case) it is impossible to distinguish between real and artificial detail (artefacts).