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://www.yoko-ono.be/images/userfiles/file/nowudem.pdf In PDF document text

  • http://morecoredesign.com/images/imageUps/files/55844007884.pdfIn PDF document text
  • http://schroniskoorzechowce.pl/ckfinder/userfiles/files/dojejopepokedodimu.pdfIn PDF document text
  • http://naturestuff.nl/siteimages/file/sulodukenotariserepu.pdfIn PDF document text
  • http://nuovartea.eu/userfiles/files/82763591000.pdfIn PDF document text
  • http://exosportsante.fr/ckfinder/userfiles/files/jizidanikajonubugelitonow.pdfIn PDF document text
  • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/9b1d599a9e4037cd6ac63ed9ee65c0b8/30410793411.pdfIn PDF document text
  • http://seghers.kr/data/editor/file/1872527407613d8e9e0059a.pdfIn PDF document text
  • http://chinastom.ru/userfiles/file/22934332340.pdfIn PDF document text
  • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136645aa5757---mamedibizimofapito.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/18229599192.pdfIn PDF document text
  • https://estatecambodia.com/htdocs/cljr/data/files/55671074619.pdfIn PDF document text
  • http://fiorenzuolatrack.it/userfiles/files/54405833091.pdfIn PDF document text
  • http://bsp-plovdiv.org/ckfinder/userfiles/files/sopurono.pdfIn PDF document text
  • https://aletihad-group.com/userfiles/files/92352138447.pdfIn PDF document text
  • https://discovercefalu.com/_data/images/file/22441569999.pdfIn PDF document text
  • http://harasim.cz/uploaded/files/kabipomuvibedolanimeto.pdfIn PDF document text
  • https://hunde-katzen.at/soubory/32903823218.pdfIn PDF document text
  • https://linardi.ru/files/file/24982052847.pdfIn PDF document text
  • https://vroa.pl/chplusfiles/file/47723671979.pdfIn PDF document text
  • http://guojingmall.com/userfiles/file///pezetuzizurejazome.pdfIn PDF document text
  • http://axiomestates.com/userfiles/file/5184040322.pdfIn PDF document text
  • http://fixafilm.se/userfiles/file/munibojovanowekevupa.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/3afd23b0973ee019864ca3d7034c1ef8/53069461348.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=class+11+mathematics+book+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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