Malicious PDF — malware analysis report

Heuristics 6

• 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://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca53526d65---xomezusajumovow.pdf In PDF document text

  • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823f4c16259---48897005276.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160920d02e3587---52292351730.pdfIn PDF document text
  • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/2a204cf5b29687e0d846eeba969277b6/baxotixiri.pdfIn PDF document text
  • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160b013a1227ae---91888091826.pdfIn PDF document text
  • http://pincailight.com/zk/UploadFile/file/2021062415375873499.pdfIn PDF document text
  • http://goldenbaycruisesagent.com/userfiles/file/15596157824.pdfIn PDF document text
  • http://wooshin.kr/uploaded/file/41565672260b5e16858196.pdfIn PDF document text
  • https://jaurrieta.net/USERFILES_JAURRIETA/files/nirusivexiwawunawibati.pdfIn PDF document text
  • http://onnetsolution.in/userfiles/file/14570981238.pdfIn PDF document text
  • http://czpohledavky.cz/userfiles/files/56391319973.pdfIn PDF document text
  • http://mai-colle.jp/userfiles/file/savetijeloje.pdfIn PDF document text
  • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5ac916be2---21816964278.pdfIn PDF document text
  • http://ats-dz.com/userfiles/file/mofebodefod.pdfIn PDF document text
  • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/7ff28375d46ec49e0e9f13f8fb7d30fb/gisoborotabor.pdfIn PDF document text
  • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089f1b06a308---jajuru.pdfIn PDF document text
  • http://ghhs1968.com/clients/5/57/5762190d0a265df614d1f295a7060a42/File/xiliwifil.pdfIn PDF document text
  • http://meandnetworking.com/ckfinder/userfiles/files/wujesewokobopubunumuja.pdfIn PDF document text
  • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbbc3a60118---vesasoweseweduveruto.pdfIn PDF document text
  • http://agriturismofattorialucciano.it/ckfinder/userfiles/files/mokizejune.pdfIn PDF document text
  • http://china-zzld.com/uploadfile/file///2021062709211813.pdfIn PDF document text
  • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe8a73b7b9---bopevazububona.pdfIn PDF document text
  • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/88a8da39230d2818c7cefc81a0f8f850/tonorev.pdfIn PDF document text
  • http://antifftech.com/uploadfile/file///2021051910581345.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=pcr+based+site+directed+mutagenesisPDF 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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