Malicious PDF — malware analysis report

Heuristics 6

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1610fbf4e4ea1b---verudigemil.pdf In PDF document text

  • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/2095c609013a6a1d50a0b96c9f9f6547/29975058448.pdfIn PDF document text
  • http://toeicspeaking.net/_UploadFile/Images/file/71047828507.pdfIn PDF document text
  • http://nbc.com.vn/ckfinder/userfiles/files/38310084711.pdfIn PDF document text
  • https://grupo.iberia.es/js/ckfinder/userfiles/files/67674028148.pdfIn PDF document text
  • http://koppeika.ru/userfiles/file/86720418667.pdfIn PDF document text
  • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/72bacaf0e5f91b25b8246a31a1db095e/fuzifirisebujapufodule.pdfIn PDF document text
  • http://amy-tsai.com/images_express/userfiles/files/bifijixowo.pdfIn PDF document text
  • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7c5109b82---zudawi.pdfIn PDF document text
  • http://highlandlynxotic.com/clients/7/73/73cf6ae24f8ea70eb1cbac1dff6b0f9e/File/tanet.pdfIn PDF document text
  • http://fotossc.pl/_files/file/jusabonafi.pdfIn PDF document text
  • https://sonerofset.com/userfiles/file/gibafawinuvufenetusagaje.pdfIn PDF document text
  • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f1fd19ceee7---18133390149.pdfIn PDF document text
  • http://co-mit.com/uploads/files/sawisegakapiwibanemi.pdfIn PDF document text
  • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba4a2f7235b---34166584138.pdfIn PDF document text
  • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/6eb697a0dceb2dd30f3d996c66efd961/42060935735.pdfIn PDF document text
  • https://jooli.ru/ckfinder/userfiles/files/18200058784.pdfIn PDF document text
  • https://fnb-concepts.com/images/uploads/files/15186591207.pdfIn PDF document text
  • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/900a5fe9dd821f56f3b661ec8a699637/vunetisutirites.pdfIn PDF document text
  • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/sabozibuvudozomerezadi.pdfIn PDF document text
  • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/kibakirunexakatikagikufe.pdfIn PDF document text
  • http://www.motorradfreunde-toggenburg.ch/up/files/15737733924.pdfIn PDF document text
  • http://sanitaerprofi.ch/fckeditor/editor/images/file/33709342542.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=freezer+temperature+sheets+pdfPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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