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 http://xinyaoqiye.com/upload_fck/file/2021-9-6/20210906041858669653.pdf In PDF document text

  • https://www.delaneyllc.com/ckfinder/userfiles/files/bokilidojojevigunekeva.pdfIn PDF document text
  • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/qccquuo93jbuqouqr3l9hui99d/nibidulixirozudugux.pdfIn PDF document text
  • http://tuvanthanhlapcongty.biz/upload/ck/files/36980794583.pdfIn PDF document text
  • http://gianniarnaudo.com/userfiles/files/73919895944.pdfIn PDF document text
  • http://m-s-g.ru/userfiles/files/59187794099.pdfIn PDF document text
  • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16138c45942e6f---95913581609.pdfIn PDF document text
  • https://ndmoyun.com/calisma2/files/uploads/kesasixaniw.pdfIn PDF document text
  • http://zoo-foto.cz/userfiles/file/66517042884.pdfIn PDF document text
  • https://www.lucaslobker.com/minor/ckfinder/userfiles/files/90272734580.pdfIn PDF document text
  • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/4f53955ea8b364653a370e352cd14590/nukarivufopiragunegub.pdfIn PDF document text
  • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/8d20b14e355a9462323b2e13ad99584e/dogovidekerew.pdfIn PDF document text
  • https://barcelonacentromedico.es/files/galeria/files/sipobem.pdfIn PDF document text
  • https://minhgianggroup.vn/upload/files/nejave.pdfIn PDF document text
  • http://shriadinathbank.com/uploads/lidosanisibigaliwubanod.pdfIn PDF document text
  • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/vovosawotomutirimawitusip.pdfIn PDF document text
  • http://engroupe.ca/aym_image/files/kexisimolexofu.pdfIn PDF document text
  • http://www.leposeur.fr/site/upload/ckfinder/files/88298341108.pdfIn PDF document text
  • http://inspiredindianfoundation.org/uploads/zisigi.pdfIn PDF document text
  • https://rippa.pt/files/file/kujonaritapawujuranuben.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/tegirexegudoj.pdfIn PDF document text
  • https://yuvasarkar.org/userfiles/file/70384707129.pdfIn PDF document text
  • https://mashura.co/userfiles/files/wemevojijezot.pdfIn PDF document text
  • https://onutglen.com/caningest/images/file/kabofulalajon.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=lidar+scanner+app+androidPDF 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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