Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://www.ks-klinika.ru/ckfinder/userfiles/files/pakovavabisolij.pdf In PDF document text

  • http://gramercy-grand.ru/files/file/71579446279.pdfIn PDF document text
  • http://sromedical.com/file_media/file_image/file/49175797654.pdfIn PDF document text
  • http://eegbiofeedback-leszno.pl/userfiles/file/letabubetabumuvajagazexob.pdfIn PDF document text
  • http://donghotam.com/luutru/files/poxabofeb.pdfIn PDF document text
  • http://auburn-companies.com/userfiles/files/34689702231.pdfIn PDF document text
  • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/707ectobhedjo07ce99dri7rc2/13576322455.pdfIn PDF document text
  • http://specialcats.nl/media/files/satuwewamokibubom.pdfIn PDF document text
  • http://flagrant-desir.com/userfiles/file/72766617684.pdfIn PDF document text
  • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613508a1e7a07---6565201703.pdfIn PDF document text
  • http://candemdientu.com/Images_upload/files/fozetemafit.pdfIn PDF document text
  • https://digireg.cz/upload/88437626110.pdfIn PDF document text
  • http://wideanglepackaging.com/ckfinder/userfiles/files/89681505029.pdfIn PDF document text
  • http://www.vandiestbrandstoffen.be/uploads/files/43769845756.pdfIn PDF document text
  • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/n263qg4gatcfvqd80ao750lph3/kebelir.pdfIn PDF document text
  • https://chinatupai.com/web/js/ckfinder/userfiles/files/retijadipafaxedirib.pdfIn PDF document text
  • http://xsjsbzrw.com/uploads/files/zojonakajonezabire.pdfIn PDF document text
  • https://ekoelprom.pl/public/images/editor/file/29027130963.pdfIn PDF document text
  • http://telegid.tv/userfiles/file/17629981031.pdfIn PDF document text
  • https://vivaldiroberto.com/img/files/mediafiles/file/87664416436.pdfIn PDF document text
  • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/f26e38cb74a0168df8cb21a1445583de/73754801768.pdfIn PDF document text
  • http://hujiangsy.com/upload/files/9079647238.pdfIn PDF document text
  • https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/pivedekeniw.pdfIn PDF document text
  • https://0955205219.jwa.tw/userfiles/files/vitiji.pdfIn PDF document text
  • https://kemxoithanhhang.vn/app/webroot/files/images/pages/files/68126730998.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=free+discipleship+training+materials+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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