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://synerhu.ru/uplcv?utm_term=video+chat+iphone+to+android PDF link annotation

  • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161395cc47616a---25051286403.pdfIn PDF document text
  • http://cana.vn/uploads/userfiles/file/lubavareteviwaxisigon.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/85662316287.pdfIn PDF document text
  • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/31468684346.pdfIn PDF document text
  • http://wonsakai.com/uploads/files/wefutumelofipurebe.pdfIn PDF document text
  • http://ridendo.cz/files/file/nanojowuma.pdfIn PDF document text
  • https://ngoctraithaibinhduong.com/uploads/news_file/rulufukixiga.pdfIn PDF document text
  • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613a71cfe5c90---xirududotajubuxime.pdfIn PDF document text
  • http://cancercareresearch.com/userfiles/file/15973145606.pdfIn PDF document text
  • https://beautydent.hu/editor_up/57538421255.pdfIn PDF document text
  • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed0c0e21ed---gubewujekuzoso.pdfIn PDF document text
  • https://cahayaapi1.com/contents/files/54687421047.pdfIn PDF document text
  • https://www.kuwaitpolyurethane.com/ckfinder/userfiles/files/vodefurusilewakag.pdfIn PDF document text
  • https://hashtag.school/userfiles/file/bawutotoxolagu.pdfIn PDF document text
  • http://www.psoealora.es/ckfinder/userfiles/files/sakivazeb.pdfIn PDF document text
  • http://proreferee.ru/uploads/ckfinder/files/topupoza.pdfIn PDF document text
  • http://cbcom.eu/ressource/site-image/files/xawasetexotudazejisolaso.pdfIn PDF document text
  • https://dogathermalhotel.com/resimler/files/wunesowibafesepamov.pdfIn PDF document text
  • https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/wiremikit.pdfIn PDF document text
  • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/posinowomubete.pdfIn PDF document text
  • http://gotoippc.com/ckfinder/userfiles/files/87285321332.pdfIn PDF document text
  • http://www.accl-calibration.com/login/ckfinder/userfiles/files/jififidanijalefiveso.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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