Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b33e8ec8c2765f9…

MALICIOUS

PDF

26.6 KB Created: 2020-03-30 20:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: e53285729ba9eab1470516d4d71d2533 SHA-1: 78201fe8cdf1baad894097a7dacfc6626582b935 SHA-256: 8b33e8ec8c2765f95c056ba8747a36119a7ec59dc482842018ce4d92866b6d66
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are numerically or generically named, indicating a link farm or SEO spam tactic. The document body, though heavily corrupted, contains fragments suggesting it is disguised as an academic PDF. The primary heuristic, PDF_SEO_LINK_FARM, confirms the presence of a mass external link farm, with the dominant host being myeventsrtailormade.net. This suggests the PDF is designed to drive traffic to potentially malicious or low-quality content hosted on numerous domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://mountainsidemt.com/uploads/1/3/0/7/130776810/130776810.html#fisica+cuantica+2+bachillerato+pdf
    • http://myeventsrtailormade.net/uploads/1/3/0/6/130603917/tizesedebowasu.pdf
    • http://whites-butchers.com/uploads/1/3/0/6/130604501/1860156.pdf
    • http://storageauctionslive.com/uploads/1/3/0/6/130620503/7200223.pdf
    • http://winstonlearninglab.com/uploads/1/3/0/7/130775017/5257761.pdf
    • http://atrendyblogwithmeg.com/uploads/1/3/0/4/130477663/duzizu.pdf
    • http://boriscibej.com/uploads/1/3/0/8/130874077/fadibakudeg-rezugugolup-fibotagoronuzev.pdf
    • http://rivercoveresidences-sk.com/uploads/1/3/0/2/130288818/xodajudomipozitiju.pdf
    • http://frozenforgealchemy.ca/uploads/1/3/1/4/131438056/nezesas.pdf
    • http://finlayelectricalservices.com/uploads/1/3/0/3/130312934/zekajod-dakopazuvor-lenimowovir.pdf
    • http://girlsgooutdoors.com/uploads/1/3/0/5/130547207/fimoranukewupimexi.pdf
    • http://funinthesuninflatable.com/uploads/1/3/0/5/130551857/3524891.pdf
    • http://escoladofuturo2016.com/uploads/1/3/0/2/130287401/4798723.pdf
    • http://edgeproductions.ca/uploads/1/3/0/5/130542908/f4cca0737839f.pdf
    • http://newmissionseniors.com/uploads/1/3/0/7/130775104/2907806.pdf
    • http://greekexpress.shop/uploads/1/3/0/6/130639129/kekede_gorivizovoda.pdf
    • http://sallyfirino.org/uploads/1/3/0/6/130621021/990287431f87.pdf
    • http://neweramovementllc.com/uploads/1/3/0/7/130776401/3cde90.pdf
    • http://fuegoclubsf.com/uploads/1/3/0/8/130814448/d1b632c22afa.pdf
    • http://cleverchange.org/uploads/1/3/1/4/131454305/wazibed.pdf
    • http://handymaninstantly.net/uploads/1/3/0/6/130604154/1241810.pdf
    • http://arcosoffice.com/uploads/1/3/0/4/130488195/kifezekaput.pdf
    • http://moonlitdreamspublications.com/uploads/1/3/0/7/130775521/tanan.pdf
    • http://eblanchard.net/uploads/1/3/0/6/130622027/6481048.pdf
    • http://coryfair.com/uploads/1/3/1/4/131407021/238e834b7f40.pdf

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