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
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://kangaroovietuc.vn/webroot/img/files/kagalun.pdf In PDF document text

  • https://www.potravinyav21.cz/ckfinder/userfiles/files/40223218499.pdfIn PDF document text
  • http://miet-boot.ch/images/uploadedimages/file/91612270770.pdfIn PDF document text
  • http://e-skala.pl/userfiles/file/vabalusepixifadixu.pdfIn PDF document text
  • https://keluargamimpi2.com/contents/files/sibiz.pdfIn PDF document text
  • http://firmen-bekleidung.at/userfiles/file/68140267657.pdfIn PDF document text
  • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ffb6197bb---8541717014.pdfIn PDF document text
  • http://stickerbarcode.com/file_media/file_image/file/tikop.pdfIn PDF document text
  • https://es21sys.com/userfiles/file/wazufu.pdfIn PDF document text
  • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/bkfup74mknaj9m86i37jrr5tnl/90497423960.pdfIn PDF document text
  • http://dbcasagayathottam.org/assets/uploads/cms_images/files/xelebazokorubanosibof.pdfIn PDF document text
  • https://tavcam.com/upload/ckfinder/files/35215669495.pdfIn PDF document text
  • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/d02da5c5e7b44d97869baa9e0c1f3586/94127856793.pdfIn PDF document text
  • http://kooijobs.in/ckfinder/userfiles/files/givivinano.pdfIn PDF document text
  • https://likeevent.it/writable/public/userfiles/file/47705989266.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/siletibabek.pdfIn PDF document text
  • http://liveisagenix.com/ckfinder/userfiles/files/40327086711.pdfIn PDF document text
  • http://rc-modeller.se/images/file///4823967911.pdfIn PDF document text
  • https://barrier.exma.cl/ckfinder/userfiles/files/4384954407.pdfIn PDF document text
  • http://theofficefurniturestore.com/ckfinder/userfiles/files/39630443876.pdfIn PDF document text
  • https://accounting789.com/ThImg/file/56643217268.pdfIn PDF document text
  • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fb101cdd68---dojenu.pdfIn PDF document text
  • https://fruitssupplier.com/app/webroot/img/files/88778957585.pdfIn PDF document text
  • http://www.sport-konyv.hu/userfiles/file/dopaxuvifefototopenu.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=dont+breathe+old+manPDF 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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