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://krisoc.ru/uplcv?utm_term=romance+guitarra+pdf PDF link annotation

  • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/cb1ca82a8430e1424f78cdb9873ac9d9/35528375634.pdfIn PDF document text
  • http://sghscsjamarai.org/guruhargobind/userfiles/file/78809103653.pdfIn PDF document text
  • http://quick-thailand.com/images/uploads/file/91508655925.pdfIn PDF document text
  • http://yaqeen-eg.com/userfiles/file/45109538926.pdfIn PDF document text
  • https://octvads.site/js/ckfinder/userfiles/files/55202738071.pdfIn PDF document text
  • http://dkmmotor.com/files/userfiles/file/10206237354.pdfIn PDF document text
  • http://mega-treid.com/userfiles/files/fizuwu.pdfIn PDF document text
  • https://doosradashak.in/ci/userfiles/files/mimanalali.pdfIn PDF document text
  • http://veganogle.es/uploads/ckfinder/files/pumikawon.pdfIn PDF document text
  • http://lamexmarket.com/uploads/files/82927514886.pdfIn PDF document text
  • http://dongsimkindergarten.com/upload/files/12980864094.pdfIn PDF document text
  • http://1day2night.com/UserFiles/file/tojokimewakireva.pdfIn PDF document text
  • https://cyklo-wellness-penzion-palice.cz/content/zokabum.pdfIn PDF document text
  • https://cubic.is/userfiles/file/8821891909.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/17661231856.pdfIn PDF document text
  • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/s6cvepocdul62lg3fr5l9ie8j1/72028567674.pdfIn PDF document text
  • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870cbe2f37b---98233328779.pdfIn PDF document text
  • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/f6690f11619abfa56ffd4570719a2119/65684867904.pdfIn PDF document text
  • http://reelproductionshd.com/userfiles/file/74771061786.pdfIn PDF document text
  • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/978pltmu0abd8aek5q2od9kpj8/64285382313.pdfIn PDF document text
  • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/77eae77cb641ccb6a23de334c135c215/58964592609.pdfIn PDF document text
  • http://csc0731.com/userfiles/file/20210615185000_uh1cai.pdfIn PDF document text
  • http://aksaaydinlatma.com/img/editor/image/file/19540131744.pdfIn PDF document text
  • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1475668a7---sozediketasobekigabu.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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