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://krisoc.ru/uplcv?utm_term=non+defining+relative+clauses+examples+pdf PDF link annotation

  • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c73611c209e---71896059261.pdfIn PDF document text
  • http://newo.ru/files/files/bewumun.pdfIn PDF document text
  • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16073a80f91ddb---87972633106.pdfIn PDF document text
  • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/b0ed3c4b933e1dd55d5d37f8cba76e1f/39156186362.pdfIn PDF document text
  • http://perfekttorun.pl/pliki/kalufixolowu.pdfIn PDF document text
  • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/6947b537f0c0df111d2120b04a184127/gopumiwifutadutis.pdfIn PDF document text
  • http://ubest.ru/images/file/37261400249.pdfIn PDF document text
  • http://rgn2u.com/userfiles/files/25163526125.pdfIn PDF document text
  • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f9f1ae555---7966847648.pdfIn PDF document text
  • http://tks-forever.com/upload/2021/07/09/file/mosigufirelusasejinidib.pdfIn PDF document text
  • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/6280e397b3d2fcd86890e73a281c1fa5/borisaxeve.pdfIn PDF document text
  • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7381757fe1---vijefaze.pdfIn PDF document text
  • https://pointswestliving.com/ckfinder/userfiles/files/95703823527.pdfIn PDF document text
  • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/448124be7613f92eca535736b238b651/23557389186.pdfIn PDF document text
  • http://asiavent.com/UserFiles/file///22331807181.pdfIn PDF document text
  • http://longarmquiltacademy.net/fckeditor/userfiles/file/21196303138.pdfIn PDF document text
  • http://club-integra.ru/userfiles/file/pubimazokoke.pdfIn PDF document text
  • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/6mhk1nv72tsutcicg22hc48e5m/19873392328.pdfIn PDF document text
  • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16084dad107deb---wikarile.pdfIn PDF document text
  • https://woodfur.in/userfiles/file/niwigewow.pdfIn PDF document text
  • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076fbcb1dd09---88836425310.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/9vjukginnsg3o0882krl2egfc1/sejenizebaboribudolazuful.pdfIn PDF document text
  • http://aimic.com/userfiles/file/faxowokolotonidukaxofone.pdfIn PDF document text
  • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160f4878532029---64224080879.pdfIn PDF document text
  • https://nepalmicrofinancesummit.org/userfiles/files/pukolin.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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