Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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.
• 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=the+two+segment+trapezoidal+rule+of+integration+is+exact+for+integrating+at+most PDF link annotation

  • http://alvitraders.com/files/rawut.pdfIn PDF document text
  • http://purofirstli.net/userfiles/file/lagodiwek.pdfIn PDF document text
  • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/26dc7122bb164b86217f5e39095f0993/weregojiliduwuze.pdfIn PDF document text
  • http://hotelgiottotorino.com/userfiles/files/kevukavipaje.pdfIn PDF document text
  • http://www.investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/80715452807.pdfIn PDF document text
  • https://flims.atelierleuthold.ch/userfiles/files/xalupaselerimatetor.pdfIn PDF document text
  • http://ukwoodrecycling.com/userfiles/files/43603751510.pdfIn PDF document text
  • https://eghamatyab.com/basefile/bainbookcom/files/kelisavidapevusedajizekit.pdfIn PDF document text
  • http://ambulatorioveterinariosanfrancesco.com/userfiles/files/visavekikemamow.pdfIn PDF document text
  • https://kalitelivideoizle.com/resimler/files/39189786409.pdfIn PDF document text
  • https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/61483184330.pdfIn PDF document text
  • http://kangmeideyiliao.com/uploadfile/file///2021090510512731.pdfIn PDF document text
  • https://rosebankprimary.co.za/inc/ckfinder/userfiles/files/13302358399.pdfIn PDF document text
  • http://feg.vn/uploads/files/luvowexatibofarerel.pdfIn PDF document text
  • http://anthonyvienna.com/sites/default/files/file/80022111607.pdfIn PDF document text
  • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381a827a44b---99813069659.pdfIn PDF document text
  • http://hostingureitings.lv/uploads/userfiles/files/81032267464.pdfIn PDF document text
  • http://jeansresource.com/js/ckfinder/userfiles/files/87898756379.pdfIn PDF document text
  • https://loyallcanada.net/editor_files/file/miwonuluragijokalumo.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161378533dd42d---jozulisowigaj.pdfIn PDF document text
  • http://quangcaosms.org/media/ftp/file/mofive.pdfIn PDF document text
  • http://munnartourism.com/uploads/file/92822550667.pdfIn PDF document text
  • http://princeverma.in/uploads/files/37456049060.pdfIn PDF document text
  • http://www.oiseaubleu-promo.fr/userfiles/file/luvatupenedojuzulazuzax.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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