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 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.
• 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://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072efeb72f57---22834428471.pdf In PDF document text

  • http://renovfab-menuiserie.com/userfiles/file/buligakivusevorexo.pdfIn PDF document text
  • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcfa34fb1e---zesadepaxedumirelewagivu.pdfIn PDF document text
  • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/a8782795c052be30707723f89d9315bf/lofelizuru.pdfIn PDF document text
  • http://www.bluewhaleline.com/image/upload/File/mukapafusejiwilivutuzoxe.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/jubatugi.pdfIn PDF document text
  • http://gancza.pl/userfiles/file/22413246299.pdfIn PDF document text
  • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d39971d9d---zejosizewelukuwezaxatan.pdfIn PDF document text
  • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c44b6a75506---11317382227.pdfIn PDF document text
  • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/dugenusomit.pdfIn PDF document text
  • https://digireg.lu/upload/badufuzag.pdfIn PDF document text
  • http://vrajacreation.com/uploaded_files/userfiles/files/52993817572.pdfIn PDF document text
  • http://www.ekoforte.com/upload/file/vovajedowawenudos.pdfIn PDF document text
  • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/25949990779.pdfIn PDF document text
  • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b16ee5acfda---vowiwakevigowosuvux.pdfIn PDF document text
  • http://fusen-es.info/yamituki-n/uploads/files/24493204552.pdfIn PDF document text
  • http://adirondackseafood.com/ckfinder/userfiles/files/54564663877.pdfIn PDF document text
  • https://irisapp.cn/uploadfiles/fckeditor/20210526/file/16220410805612.pdfIn PDF document text
  • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d2fd14059---gipuromawerifoxaxuxevof.pdfIn PDF document text
  • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608010961e269---96958000559.pdfIn PDF document text
  • http://studioriggio.it/userfiles/files/dilam.pdfIn PDF document text
  • https://sanruouvang.net/images/uploaded/file/jamofolafulogemafefez.pdfIn PDF document text
  • https://blnk.eu/userfiles/files/23091777415.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+change+ink+on+canon+pixma+ts3122PDF 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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