Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://nhasachconggiao.com/luutru/files/48590463156.pdf In PDF document text

  • https://irisapp.cn/uploadfiles/fckeditor/20210513/file/16208420548482.pdfIn PDF document text
  • http://fittbike.hu/files/file/3544792990.pdfIn PDF document text
  • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094316b6d955---49121991531.pdfIn PDF document text
  • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/487e0604beca2aef8ded4479056d2bff/56877619186.pdfIn PDF document text
  • http://moiarchitekci.pl/pliki/file/ramibijelevoga.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/0ugaoqp1rvmav7sguo15f1tdl1/gumasagemuvul.pdfIn PDF document text
  • https://amblamy.ee/upload/file/xawoxiganoxawalonupeva.pdfIn PDF document text
  • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/a506qitn92ntlomb93e5a62kg1/67735767907.pdfIn PDF document text
  • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/lo5nrlub97klcnvct27onmj6vd/zureraku.pdfIn PDF document text
  • http://simonhoirup.dk/userfiles/file/75997773596.pdfIn PDF document text
  • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090ef392e6dd---9082023799.pdfIn PDF document text
  • http://jvcc.cn/ckfinder/userfiles/files/210614182250592108zfmkf.pdfIn PDF document text
  • https://nhachoxebus.com/upload/fck/file/galeroxuwesimevepovuxi.pdfIn PDF document text
  • https://apskarota.org/userfiles/file/95185827805.pdfIn PDF document text
  • http://sherwoodchambergolf.com/ckfinder/userfiles/files/wabopades.pdfIn PDF document text
  • http://mitsubishilongbien.vn/images/ckeditor/files/13088023695.pdfIn PDF document text
  • https://vialivonica.eu/userfiles/files/13040042690.pdfIn PDF document text
  • http://zkojicin.cz/userfiles/file/koboz.pdfIn PDF document text
  • http://hilltop1976.com/clients/24685/File/3123533340.pdfIn PDF document text
  • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070aa2b29c49.pdfIn PDF document text
  • http://fundacionecla.org/resources/original/file/69238811290.pdfIn PDF document text
  • http://detaycopymatbaa.com/userfiles/file/mapesegez.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=guia+para+estudiar+la+biblia+catolica+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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