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
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://krisoc.ru/uplcv?utm_term=download+anonymox+for+firefox+android PDF link annotation

  • https://h16hr15k-h19hr37urn.com/contents/files/lipozabepunizoxozure.pdfIn PDF document text
  • https://shaplaconsulting.com/app/webroot/ckfinder/userfiles/files/27053937160.pdfIn PDF document text
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16138a576d35f4---34654152534.pdfIn PDF document text
  • http://patrick-vallot.com/upload/files/79295395558.pdfIn PDF document text
  • https://nikoljski.com/ckfinder/userfiles/files/katanuzobujopowobe.pdfIn PDF document text
  • http://xn----9sbkvfu2aex3d.xn--p1ai/ckfinder/userfiles/files/72431646160.pdfIn PDF document text
  • http://modamoda.nl/uploads/pic_lib/file/81400015071.pdfIn PDF document text
  • http://goang-hann.com/uploads/files/202109041737037668.pdfIn PDF document text
  • https://leresto-niort.fr/images/userfiles/files/xorazazozegekipugik.pdfIn PDF document text
  • https://asthasupermarket.com/userfiles/file/wapani.pdfIn PDF document text
  • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16141c13919673---31262983977.pdfIn PDF document text
  • https://mediaskills.rs/files/36613139456.pdfIn PDF document text
  • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b16750632b---55375535775.pdfIn PDF document text
  • http://refah4ter.info/basefile/hotelrefah4terir/files/35267312179.pdfIn PDF document text
  • http://www.anjhimayath.com/upload/file/69307861922.pdfIn PDF document text
  • http://buyo-g.net/userfiles/file/26732323889.pdfIn PDF document text
  • http://av72-reklama.ru/userfiles/file/163062261126ff7927a79610bf6be.pdfIn PDF document text
  • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/161396567415b0---25110999850.pdfIn PDF document text
  • http://chanakol.com/ckfinder/userfiles/files/sejarubos.pdfIn PDF document text
  • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/0dd449e2660dab47635fd674215e605e/safewafetujovolawerutuxug.pdfIn PDF document text
  • http://antifftech.com/uploadfile/file///2021091215343418.pdfIn PDF document text
  • http://kunmobile.vn/files/uploaded/20210906/file/xirexosakanovomutizuwaf.pdfIn PDF document text
  • http://gjbbang.com/userData/board/file/vufopubi.pdfIn PDF document text
  • http://salamino.pl/userfiles/file/29877774585.pdfIn PDF document text
  • http://www.halpellet.hu/userfiles/files/jisopifogatonekisoduxux.pdfIn PDF document text
  • http://ajivikafinance.com/userfiles/file/30271769742.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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