Malicious PDF — malware analysis report

Static analysis result for SHA-256 9545ac515be1ca7a…

MALICIOUS

PDF

96.0 KB Created: 2021-08-16 07:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 52b17f127635739d92d402b6c2e643ee SHA-1: 915cb109364befdb93fc7afa15fbca51d6dffb14 SHA-256: 9545ac515be1ca7a58e8159472442b453747b5ed5c01333f11aafaa7db6563ef
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It functions as a link farm, directing users to numerous compromised websites that host further malicious content. The presence of multiple external URIs and link farm indicators suggests an attempt to distribute malware or phishing content through a chain of compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8520

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 http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b407b46143c---33468378158.pdf In PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/0d25d6a19034aff9b9cc2ad363b665c0/makirikekorawiregofujogew.pdfIn PDF document text
    • http://ournextfamilyreunion.com/clients/4/49/491fb30de6d8464ca6518fa43aba5bd5/File/46414017216.pdfIn PDF document text
    • https://agentcctv.com/userfiles/file/79569210316.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160769e8d2e65c---waxifamatixurejowepafalat.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/46389565428.pdfIn PDF document text
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/21148081717.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/lagidudabunaravizo.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b05c8fa50a2---69336656608.pdfIn PDF document text
    • http://industra.sk/userfiles/file/71507805809.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/43362055523.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/fn2n04t4juk68ki7in19tnk52s/14596335149.pdfIn PDF document text
    • http://wasserentkalkung.at/ckfinder/userfiles/files/titujuvimikovibuzoponuve.pdfIn PDF document text
    • http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a854a2107a---44186504749.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160983b26b517a---xewopekibazepimivizotopuf.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c777e7b15e---98390587570.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///98305116783.pdfIn PDF document text
    • https://angkalaris.com/contents//files/23862381387.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b813ca123c6---figalonokidetajukok.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/689576ddaba8afd622edb755d6869428/kebov.pdfIn PDF document text
    • https://assignmentmart.com/ckfinder/userfiles/files/kavivukibafufij.pdfIn PDF document text
    • http://xn--d1achljw0b.xn--p1ai/content/upload/30203534568.pdfIn PDF document text
    • http://rezidencianestor.sk/app/webroot/files/ckeditor/files/rudeju.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=diagrama+de+bobinado+de+motores+trifasicos+pdfPDF link annotation

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