Malicious PDF — malware analysis report

Heuristics 9

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• ClickFix social engineering attack high SE_CLICKFIX
  Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://kenkochaya.com/user_data/ckfinder/files/66722863269.pdf In PDF document text

  • http://innotack.com/userfiles/files/xasexuf.pdfIn PDF document text
  • http://protectakoteasia.com/ckfinder/userfiles/files/nodebedamuvovotadunof.pdfIn PDF document text
  • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/0ad6eff5f961d7886b1f7b99f6ad756d/pugiwoxolarumapanejel.pdfIn PDF document text
  • https://prtl.pl/userfiles/file/bavujifojitu.pdfIn PDF document text
  • https://2b3la571ga-70p.com/contents/files/87376854165.pdfIn PDF document text
  • http://remont-m.com/userfiles/file/79790713809.pdfIn PDF document text
  • http://sasmedm.com/www/js/ckfinder/userfiles/files/bewupevanimalipudefebago.pdfIn PDF document text
  • https://rajatotogroup3.com/contents/files/wizixekafuwa.pdfIn PDF document text
  • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/gawojisunifo.pdfIn PDF document text
  • http://ing-ka.com/user_img/file/13224384818.pdfIn PDF document text
  • http://studiosimonepantaleo.it/userfiles/files/setoxunekegalu.pdfIn PDF document text
  • http://taxplus.in/images/contentimages/files/pugipaparezalodoxet.pdfIn PDF document text
  • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/639f7f7f4e638668b7765470a77d8da6/84713380037.pdfIn PDF document text
  • http://picassogift.com/Uploadfiles/files/54540883293.pdfIn PDF document text
  • https://serwisnawigacji.pl/userfiles/file/73598372905.pdfIn PDF document text
  • http://cokhivietuc.webthoidai.com/img-vietuc/files/3221343039.pdfIn PDF document text
  • http://nrgmedia.hu/files/file/molopiginefuvudokime.pdfIn PDF document text
  • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147c04e8c9ed---1756496423.pdfIn PDF document text
  • http://polaryachtmanufactory.com/res/wysiwyg/file/mubanirudapipowijapegid.pdfIn PDF document text
  • http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/sifinijetanupedunote.pdfIn PDF document text
  • http://czerwoneiczarne.pl/files/file/51193218195.pdfIn PDF document text
  • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161462c7a0466a---bewamopakezigilono.pdfIn PDF document text
  • https://daiichitravel.com/uploads/news_file/59416151120.pdfIn PDF document text
  • http://ajeah-intl.org/fck_image/file/mupijikiluzazalerir.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=logitech+webcam+driver+for+androidPDF 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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