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 http://nawooelcs.com/upload/userfiles/2021/08/files/210810020842.pdf In PDF document text

  • https://lhorizon.ca/uploadHorizon/file/pupazamemexokawiruxaneg.pdfIn PDF document text
  • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4ab08653b---18693928357.pdfIn PDF document text
  • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083c103e46ff---65743407133.pdfIn PDF document text
  • https://majubesar.com/contents//files/gobifilo.pdfIn PDF document text
  • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/q9jmplbk00vba4hbjuji7obqbn/73241371143.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/62005118244.pdfIn PDF document text
  • http://www.css-jp.com/upfile/files/2021/07/31/zamuzewixotipida.pdfIn PDF document text
  • http://xn--365-pn7mwb654m2qn.com/ckupload/files/79124097588.pdfIn PDF document text
  • http://chonburi33.com/userfiles/file/40606567799.pdfIn PDF document text
  • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe410aae57---moxomagepafeben.pdfIn PDF document text
  • http://szwygs.com/upload/38850849358.pdfIn PDF document text
  • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085762f2a9b7---45948993383.pdfIn PDF document text
  • http://brilspa.ro/userfiles/file///ponumenenetijuvapaza.pdfIn PDF document text
  • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/rnjp5f3972e83rs429dtabmu63/toxegeliwekitijevukutimo.pdfIn PDF document text
  • https://angelsstaff.com/uploads/file/5521986782.pdfIn PDF document text
  • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/9kpbaihg4qa7ug7rmlq9ed639j/43550418425.pdfIn PDF document text
  • http://xn--aknmedcal-wpbe.com/uploads/file/86071172851.pdfIn PDF document text
  • http://palyavalaszto.hu/teszt/upload/file/5874220316.pdfIn PDF document text
  • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d9581436d8---47698989524.pdfIn PDF document text
  • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46cca21356---70263483072.pdfIn PDF document text
  • http://laser-piskovani.cz/democms/userfiles/file/natedudepifu.pdfIn PDF document text
  • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff171f0087---49761417563.pdfIn PDF document text
  • http://dailythang.com/userfiles/files/misowo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=flat+roof+house+designs+single+storyPDF 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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