Malicious PDF — malware analysis report

Heuristics 6

• 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 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://chcial.ru/uplcv?utm_term=human+circulatory+system+pdf+download PDF link annotation

  • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/e0452a15ade9addf7360ba92a155abd4/21458723797.pdfIn PDF document text
  • http://dj-venci.com/uploads/pages/files/88348827249.pdfIn PDF document text
  • http://muzeumostrowiec.pl/obrazy/file/36039905052.pdfIn PDF document text
  • https://baobihungphu.com/media/ftp/file/dudonegedopofom.pdfIn PDF document text
  • http://steelfurniturecn.com/d/files/moramimurutan.pdfIn PDF document text
  • http://tischtennis-kiel.de/images/file/majuropibirobibi.pdfIn PDF document text
  • https://blsautomation.com/ckfinder/userfiles/files/xakenofukezomapi.pdfIn PDF document text
  • http://nuocmambason.com/upload/fckimagesfile/26176ee68c5b2239014ab9c766598d96.pdfIn PDF document text
  • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/r5j0ts767pgdb0a1bomvbegmup/44351986964.pdfIn PDF document text
  • http://xn--49s538bo8ux8c.net/userfiles/file/79433519660.pdfIn PDF document text
  • http://aftckwt.com/uploads/file/tojedenoxesabijutamenup.pdfIn PDF document text
  • https://cafemocion.com/userfiles/file/94316428042.pdfIn PDF document text
  • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a8395f555---pojakomivakuripopulitada.pdfIn PDF document text
  • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16093cab2c38f4---tinilodalusuw.pdfIn PDF document text
  • https://iphastkala.com/userfiles/file/29237817387.pdfIn PDF document text
  • http://bitite.lv/media/txt/122/file/jakelojarem.pdfIn PDF document text
  • http://hochrainer-elsner.at/upload/files/bedazogikinug.pdfIn PDF document text
  • http://seattledesis.com/fckeditor/file/lajekuriselanuxisoj.pdfIn PDF document text
  • http://poorclarescork.ie/images/labozuras.pdfIn PDF document text
  • http://aroma-es.site/yamituki-n/uploads/files/47858644165.pdfIn PDF document text
  • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/79089fd18f2abd9403a6926ed4c6540f/74527505921.pdfIn PDF document text
  • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/de14c6ab9952ace05f3a74e6e5c5bf8a/88862580832.pdfIn PDF document text
  • https://zaragozadenoche.es/upload/files/64094354652.pdfIn PDF document text
  • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/895dc4f76cf741ad95bffc9148d30ae8/37793950816.pdfIn PDF document text
  • https://damiel.eu/userfiles/file/lafivokevasafanufowokowi.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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