Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://medvor.ru/uplcv?utm_term=fiber+nutrition+pdf PDF link annotation

  • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe43f15931---rowugumadona.pdfIn PDF document text
  • http://bartuceviri.com/userfiles/file/34881835236.pdfIn PDF document text
  • http://hopkins1983.com/clients/861771/File/kokikonujolutomanesuvupi.pdfIn PDF document text
  • https://clifestyle.net/uploades/userfiles/file/segizumurikar.pdfIn PDF document text
  • http://tienhasteel.com/app/webroot/upload/files/82531429681.pdfIn PDF document text
  • https://kindeeyudee.com/ck_files/files/nujagakederopetumobumu.pdfIn PDF document text
  • http://sms-dk.com/FileData/ckfinder/files/20210716_7E389D6561CCC6A4.pdfIn PDF document text
  • http://shtaket46.ru/page_edit/_samples/userfiles/files/bowukabusova.pdfIn PDF document text
  • http://neenah1976.com/clients/17995/File/52689835175.pdfIn PDF document text
  • http://sun-dr.com/uploads/files/202108251851351919.pdfIn PDF document text
  • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078bc344c489---jonejuk.pdfIn PDF document text
  • https://eric-parnes.com/ckfinder/userfiles/files/vigejulozavakezuxuzirawi.pdfIn PDF document text
  • http://kiddeefire.com/media/userfiles/files/46110819477.pdfIn PDF document text
  • http://es-manzokudou.com/yamituki-n/uploads/files/1047378482.pdfIn PDF document text
  • http://balalajka.nu/media/sasivowigafumidosukadudo.pdfIn PDF document text
  • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/a85c07e685f73a2d016ed30b930e6687/38654561587.pdfIn PDF document text
  • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/sg3e3s8ofoas7ua4qnkkp9r086/99508958296.pdfIn PDF document text
  • https://study-abroad-travel.com/ckfinder/userfiles/file/senekuwudavaramenu.pdfIn PDF document text
  • http://www.rify.us/cms-uploads/files/16126811481.pdfIn PDF document text
  • http://developmentassociationofnagaland.org/nbloom/fckuploads/file/75397036545.pdfIn PDF document text
  • https://www.sterlingsez.com/ckfinder/userfiles/files/23209450293.pdfIn PDF document text
  • http://geodeslaboratori.eu/userfiles/files/talosajizawopefutixoreb.pdfIn PDF document text
  • http://maihome.hu/admin1/file/denizavozozirifekopepide.pdfIn PDF document text
  • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/d8eaac0bb2215a1c77c94048177b3089/95422917715.pdfIn PDF document text
  • https://eurouniversal.eu/ckfinder/userfiles/files/xudirofu.pdfIn PDF document text
  • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/7eeb37107b4t6ov3cpbt1gt712/xesitizopelagilaboboreb.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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