Malicious PDF — malware analysis report

Heuristics 7

• 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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
• 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 https://infrive.ru/uplcv?utm_term=pascal%27s+principle+worksheet+answers PDF link annotation

  • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16078a9504f1f3---gojozorezofenufub.pdfIn PDF document text
  • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/93bfbbf485092bfd2223ef19228a08ba/53201391391.pdfIn PDF document text
  • https://pezenasenchantee.fr/userfiles/file/37406883930.pdfIn PDF document text
  • https://equantumconsulting.com/files/files/99247144177.pdfIn PDF document text
  • http://master-sign.ru/ckfinder/userfiles/files/momisapux.pdfIn PDF document text
  • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/d9213d55fa4469048be7aedb646ccc8c/vapomumuzikef.pdfIn PDF document text
  • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/cp34f0p3472kiqamrl7fcda6l5/pazizowovakonuxozupav.pdfIn PDF document text
  • http://biomisszio.hu/tmp/35170938582.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/o6hlaofusr5opehhjgrcdsfe84/gorej.pdfIn PDF document text
  • http://mtegl.wsystem.sk/userfiles/files/8255063066.pdfIn PDF document text
  • http://creative-format.com/upload/editor/files/nedomopakojubepevixemo.pdfIn PDF document text
  • https://apskarota.org/userfiles/file/lojuvin.pdfIn PDF document text
  • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/3ba9aee4bc45c8d86d50d479c3b868c2/pofebiviwumewej.pdfIn PDF document text
  • http://meteosputnik.ru/userfiles/file/51691416766.pdfIn PDF document text
  • http://cn-polylysine.com/d/files/77029485050.pdfIn PDF document text
  • http://melhi68.com/clients/69549/File/48406602498.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16126bee9bbbbd---larufuwidorikotivuzoge.pdfIn PDF document text
  • https://agentcctv.com/userfiles/file/bujamarijeris.pdfIn PDF document text
  • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16072022ef19bb---gasedowasazajisobapedi.pdfIn PDF document text
  • http://stimatacasa.eu/userfiles/files/17327950175.pdfIn PDF document text
  • https://lmetinternationalschool.in/ckeditor/ckfinder/userfiles/files/13201495274.pdfIn PDF document text
  • http://staresecurity.com/userfiles/file/tananebizuxoborumemen.pdfIn PDF document text
  • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160804647c1939---74807664402.pdfIn PDF document text
  • https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/86e10330aab6db45ac59c1885e14661d/60856569874.pdfIn PDF document text
  • 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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