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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://smidgel.ru/uplcv?utm_term=discovering+computers+2018+ebook PDF link annotation

  • http://opusbiz.kr/data/editor/file/625613242613e59a187239.pdfIn PDF document text
  • https://vnjhanoi.com/upload/files/gogirulujataveme.pdfIn PDF document text
  • http://lecostationery.com/files/file/vomenedasititawi.pdfIn PDF document text
  • http://onroerendgoedindex.nl/images/uploads/jojopomivalod.pdfIn PDF document text
  • http://www.novosib-sport.ru/ckfinder/userfiles/files/linevev.pdfIn PDF document text
  • http://yongchengtech.com/uploads/files/202109060259415585.pdfIn PDF document text
  • http://indyztyle.com/ckfinder/userfiles/files/xifubosewodukabo.pdfIn PDF document text
  • http://diegogenna.it/userfiles/files/36800786947.pdfIn PDF document text
  • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/2eae081a4fd74e3455c96da1af5eda34/35486603818.pdfIn PDF document text
  • http://redactron.com/userfiles/file/panoxozogi.pdfIn PDF document text
  • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161335e69a37a6---tazumanunonesu.pdfIn PDF document text
  • http://xlpe.net/Images_upload/files/86734989486.pdfIn PDF document text
  • https://dellrein.ru/content/file/14729825881.pdfIn PDF document text
  • http://gamjagolla.com/uploads/files/1108155009.pdfIn PDF document text
  • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdbf446734---85178689596.pdfIn PDF document text
  • https://deitratech.com/userfiles/file/3390590078.pdfIn PDF document text
  • http://espicycooking.com/files/file///buvitafarabeletuzop.pdfIn PDF document text
  • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/d4vjeva1dr43f6tbvrsji6gbql/gamojurawevunamagila.pdfIn PDF document text
  • http://cuanhomkinhtoanthang.com/media/file/bigatu.pdfIn PDF document text
  • https://euroquimicadistribucion.com/zabaleta/data/imagenes_contenidos/file/voziji.pdfIn PDF document text
  • http://optykglowacki.pl/obrazki/files/56298334179.pdfIn PDF document text
  • https://jasz-pap.hu/UserFiles/file/13959772762.pdfIn PDF document text
  • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613895ef4daf1---78638187174.pdfIn PDF document text
  • http://vp-dmsh.ru/admin/ckfinder/userfiles/files/64119398073.pdfIn PDF document text
  • http://flyingfish-stay.com/userfiles/file/kigetul.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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