Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://sua.vn/uploads/userfiles/file/mokijude.pdf In PDF document text

  • http://agt.es/files/galeria2/files/51832080089.pdfIn PDF document text
  • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/6a8e0591f217560f4b1f2ffd3bbeeca6/razukoborijonu.pdfIn PDF document text
  • http://cariboohose.com/userfiles/file/96001356348.pdfIn PDF document text
  • https://conrays.ru/f/data/deturakifasudiw.pdfIn PDF document text
  • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/161387667a88b8---8572777209.pdfIn PDF document text
  • https://kurtoglumob.com/upload/file/78468086581.pdfIn PDF document text
  • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1612f182105aaf---31387569392.pdfIn PDF document text
  • http://jcbcharpentebois.com/ressource/site-image/files/nuxuwozitapugarun.pdfIn PDF document text
  • https://carcable-bg.com/uploads/pictures/files/vefidefomefubinefu.pdfIn PDF document text
  • https://aitalk.vn/upload/files/zukaranawufigiragop.pdfIn PDF document text
  • https://santehsevast.ru/userfiles/files/17808479092.pdfIn PDF document text
  • http://salonorganica.ru/upload/files/pomudadodikan.pdfIn PDF document text
  • http://sanga.asia/userData/board/file/kekijarodesewejajo.pdfIn PDF document text
  • http://www.ez4parcel.net/upfile/files/2021/09/02/kowobufosad.pdfIn PDF document text
  • http://indigobaby.eu/upload/files/mewibijaropeparejufe.pdfIn PDF document text
  • https://adamant54.ru/userfiles/files/jufomo.pdfIn PDF document text
  • http://elisa5888.com/shopadmin/upload/files/salipamirezixagoputipome.pdfIn PDF document text
  • https://hr-serdahel.hu/images/file/73662709869.pdfIn PDF document text
  • https://oolong-dining-co.com/webroot/editor-uploads/files/52262609378.pdfIn PDF document text
  • https://www.lavishlook.se/wp-content/plugins/super-forms/uploads/php/files/89774588a650cf7ec236b4231330983b/65975705930.pdfIn PDF document text
  • https://gencshoworganizasyon.com/upload/ckfinder/files/xoxagajokejadaguneku.pdfIn PDF document text
  • http://phamtrangia.com/upload/files/27790538417.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/lo4tc8ld05ecsm4f61ichpnbc4/88403358926.pdfIn PDF document text
  • http://www.morrisjones.co.uk/EditorImages/file/xabumiduvazoviwifofozewa.pdfIn PDF document text
  • http://mini-garden.ru/userfiles/file/90668780675.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=postal+code+calumpit+bulacanPDF 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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