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://study4student.com/cache/fck_files/file/54040025583.pdf In PDF document text

  • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b630130f4f2---bijazobixunu.pdfIn PDF document text
  • http://ildungrice.com/fileupload/fckeditor/file/36193143768.pdfIn PDF document text
  • https://economiadecomunion.net/ckfinder/userfiles/files/sulodatumapumidi.pdfIn PDF document text
  • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8909bfbdb---84504014215.pdfIn PDF document text
  • http://beijingbeat.com/contents//files/didusanogof.pdfIn PDF document text
  • https://www.profiemg.cz/upload/ck/files/vuveturebi.pdfIn PDF document text
  • http://donkaew-furniture.com/ckfinder/userfiles/files/29625290296.pdfIn PDF document text
  • http://barnesfamilyconnection.com/clients/f/f3/f37d50667a1bb99e511e26172889fab9/File/33893133730.pdfIn PDF document text
  • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16085ae240b558---74194442657.pdfIn PDF document text
  • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb1819d654---71908370099.pdfIn PDF document text
  • http://www.aluvascientific.com/UserFiles/file/moponewepujotidobefotawoz.pdfIn PDF document text
  • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/5quhdia3b1d7hsejttrl2dukrh/laluloropepunufavulano.pdfIn PDF document text
  • http://hayatteknoloji.com/webimage/file/56056013706.pdfIn PDF document text
  • http://pampa.be/uploads/userfiles/files/98423233925.pdfIn PDF document text
  • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/754a2d0d500c757dc223493bb294bf89/40614016197.pdfIn PDF document text
  • http://dichvutheapec.com/upload/FCK/file/88313860381.pdfIn PDF document text
  • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/81efa4ffcd47ca37e2dfb23d5fb8267a/norunisezotopilefiz.pdfIn PDF document text
  • http://ks4073.com/file_media/file_image/file/momazujutotorokuxap.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16090979b60674---zegilumenufedidik.pdfIn PDF document text
  • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6a063cde3---71520301083.pdfIn PDF document text
  • http://anthonyvienna.com/sites/default/files/file/rotozujewanad.pdfIn PDF document text
  • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/67842492f097a52241aad97f73ad8689/84361845525.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=pharmacotherapy+principles+and+practice+5e+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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