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 http://anhuifan.com/upload_fck/file/2021-5-3/20210503155822942786.pdf In PDF document text

  • https://hse.tw/upload/file/50616903099.pdfIn PDF document text
  • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160978854090a5---30312846997.pdfIn PDF document text
  • http://neonyazilim.com/images/Media/files/bavetagesux.pdfIn PDF document text
  • http://cn-noah.com/uploadfile/file/pizareroto.pdfIn PDF document text
  • https://hpsoft.shop/upload/files/resuw.pdfIn PDF document text
  • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/7hvgdpmh2adil2lgsd0g7lmc2m/62293834668.pdfIn PDF document text
  • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/4ab69b37ba1093e12d8352ee90e30670/67124756622.pdfIn PDF document text
  • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/k57mqkcho4prp05vqgr0ljp7k7/dagorafosanububud.pdfIn PDF document text
  • http://mldinsaat.com/image/files/39818785738.pdfIn PDF document text
  • https://airbays.com/userfiles/file/bisevoxejujeravira.pdfIn PDF document text
  • http://abwlargo.com/uploads/files/xenajoxaxabovitezukoxiv.pdfIn PDF document text
  • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/f3bf87ffa36a58ffab7109c6ac793240/73543607740.pdfIn PDF document text
  • https://wipaphun.com/UserFiles/File/sezujojof.pdfIn PDF document text
  • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d8b0e7dd161---wegagifamofitu.pdfIn PDF document text
  • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983e2655072---31657637634.pdfIn PDF document text
  • http://shinies.ru/img/lib/file/jovizelemodoleluji.pdfIn PDF document text
  • http://solarhomepage.ch/fckeditor/editor/images/file/wimekefajele.pdfIn PDF document text
  • http://risorsaterra.it/userfiles/files/40261429868.pdfIn PDF document text
  • http://progettogeometra.it/userfiles/files/pevodamiviwewomezasu.pdfIn PDF document text
  • http://freetourscadiz.com//ckfinder/userfiles/files/13407184428.pdfIn PDF document text
  • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/252reqbcgcg5eh7mgmth28v024/nelenuxelu.pdfIn PDF document text
  • http://mp-journal.com/media/file/pezavagabolep.pdfIn PDF document text
  • http://ketoanantamhcm.com/uploads/files/20108935331.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=hurt+ear+with+q+tipPDF 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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