Malicious PDF — malware analysis report

Heuristics 8

• 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 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.
• 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.
• 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://pistant.ru/uplcv?utm_term=name+reactions+in+organic+chemistry+class+12+pdf PDF link annotation

  • http://ozona.pt/js/fckeditor/editor/filemanager/connectors/wysiwygfiles/file/78749006329.pdfIn PDF document text
  • http://longarmacademy.net/fckeditor/userfiles/file/16267095874.pdfIn PDF document text
  • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/9e543bf42b54d3a3a22eb348c1cdf312/sirosoniras.pdfIn PDF document text
  • http://aleshashop.net/uploaded_files/userfiles/files/nuxepivi.pdfIn PDF document text
  • https://gesema.com/UserFiles/file/69719569093.pdfIn PDF document text
  • http://dlzhrjd.com/images/uploadfile/files/januxekemiwunagaxab.pdfIn PDF document text
  • http://kfbma.org/files/fck/file/kapojax.pdfIn PDF document text
  • https://btcauction.vn/hinhanh/file/61804940739.pdfIn PDF document text
  • http://theffirm.com/userfiles/file/pokazaduloterugufinedu.pdfIn PDF document text
  • https://samngaimarble.com/html_upload/file/79194364868.pdfIn PDF document text
  • https://eslms.com/userfiles/file/41697940287.pdfIn PDF document text
  • http://espaciocultivarte.com/ckfinder/userfiles/files/74236222305.pdfIn PDF document text
  • https://borsalino.ro/imagini_ws/80142425627.pdfIn PDF document text
  • http://poketomecam.com/uploads/files/vamegilivowiwufi.pdfIn PDF document text
  • http://mosjob.ru/images/file/lebikezofo.pdfIn PDF document text
  • https://krzczonowice.pl/gfx/file/jikirufivizalir.pdfIn PDF document text
  • http://onlinepravenconsultant.com/uploads/wysiwyg/files/61005457899.pdfIn PDF document text
  • http://hairandoil.com/uploads/18030773089.pdfIn PDF document text
  • http://alrabbanoilandgas.com/file/files/rupemogi.pdfIn PDF document text
  • http://drentmedischadvies.nl/uploads/files/vedinokome.pdfIn PDF document text
  • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/35bf9e3ba13881ce3f8b1892f3645756/pokekoguminezibipokazona.pdfIn PDF document text
  • http://jualumnitoronto.com/editor/uploadfiles/79728220306.pdfIn PDF document text
  • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139bb5326c0a---39926908673.pdfIn PDF document text
  • http://lnhaihui.com/userfiles/file/20210912215630_1040286181.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/tiwuf.pdfIn PDF document text
  • https://csp-pub.com/stockages/files/fuvagebil.pdfIn PDF document text
  • http://aurastaffing.es/upload/file/16750235154.pdfIn PDF document text
  • http://regalmotors-jp.com/js/upload/files/22812718072.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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