Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacbd8a6473cad7f…

MALICIOUS

PDF

62.3 KB Created: 2021-09-04 02:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: dd3f19963fa2c35cf68b6e692c978ec7 SHA-1: 47889b8ebc80ec0d52b7d06aab48bf80c5b4b069 SHA-256: dacbd8a6473cad7f51da9d9346993a827273d5590a99c3412ac2a7fbf2575986
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan payload. It functions as a link farm, directing users to various websites, some of which are hosted on compromised CMS uploads or disposable domains. The primary goal appears to be redirecting users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://makiriaszto.hu/ckfinder/userfiles/files/sejetowakivaloxukulufaji.pdf In PDF document text
    • http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/vabisixaxedariwesad.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad91c009f3b---56894519990.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160975de8c8dcd---gisowasesekogupolipefib.pdfIn PDF document text
    • http://mtsskzy.com/userfiles/file/2096128398.pdfIn PDF document text
    • https://pisangmanis.com/contents//files/fakumedafekiz.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/ell61bfsrl1dttuh5971bljj95/8834145105.pdfIn PDF document text
    • http://arcadia-fitness.es/userfiles/file/redagabasap.pdfIn PDF document text
    • http://kmsenior.org/file/files/81297737639.pdfIn PDF document text
    • http://pattarasawat.com/ckfinder/userfiles/files/67643856772.pdfIn PDF document text
    • http://thedreaminitiative.org/Content/Admin/uploads/files/1742731438.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070c35fdadf1---40440836474.pdfIn PDF document text
    • http://bestbelly.org/content/files/files/72146023857.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161151e7302656---85184602935.pdfIn PDF document text
    • https://ecoquimica.cl/dinamicos/uploads/file/sibupedafasosuwomolox.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/gf2br0c1daduev1gjd3bqkca47/45795405844.pdfIn PDF document text
    • http://chinoboxingclub.com/clients/36032/File/34279590342.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/84138571579.pdfIn PDF document text
    • http://giustizianuova.it/userfiles/file/sivisapopenuvubevepet.pdfIn PDF document text
    • http://kpotplace.com/uploads/files/21869884515.pdfIn PDF document text
    • https://gretajensen.com/ckfinder/userfiles/files/14846311526.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///10421022193.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160820ca6dff25---87844298898.pdfIn PDF document text
    • http://innotack.com/userfiles/files/jidetipigikolesegap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=sentence+fragment+worksheets+grade+3PDF link annotation

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