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 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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=hsc+advanced+english+grammar+pdf PDF link annotation

  • https://nieruchomosciturystyczne.eu/files/file/kosofulatamewizuz.pdfIn PDF document text
  • https://alwaysthesame.pt/site/upload/file/54137227334.pdfIn PDF document text
  • https://tmtteks.com/files/88231351501.pdfIn PDF document text
  • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613837810e137---pekezofo.pdfIn PDF document text
  • https://graveyards-fuj.ae/userfiles/files/15943047811.pdfIn PDF document text
  • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0cf81659c---xewotajumivifawosete.pdfIn PDF document text
  • http://ficfart.org/userfiles/file/mutalukudimaru.pdfIn PDF document text
  • http://ipsaix.com/ckeditor/ckfinder/userfiles/files/24636687778.pdfIn PDF document text
  • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132141bc0c10---30302250721.pdfIn PDF document text
  • http://say-international.eu/userfiles/file/77683179232.pdfIn PDF document text
  • http://etcpremium.com/userfiles/files/15762887417.pdfIn PDF document text
  • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16140baafdb652---zebaxizidakinurefarimevil.pdfIn PDF document text
  • https://vidaleve.net/ckfinder/userfiles/files/94881524934.pdfIn PDF document text
  • http://indianspringhomes.net/userfiles/files/66577874476.pdfIn PDF document text
  • http://xn--h1aeekk.xn--p1ai/files/file/93237733871.pdfIn PDF document text
  • http://jgweld18.com/UploadFile/file/20210910143456706.pdfIn PDF document text
  • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/b55202719d141072906e2af66e56947a/figiwijigotelaturerapu.pdfIn PDF document text
  • https://gmt-tw.com/app/webroot/userfiles/files/44119997834.pdfIn PDF document text
  • http://sgd42.ru/userfiles/file/53590296705.pdfIn PDF document text
  • http://pate4me.com/userfiles/file/suremukuri.pdfIn PDF document text
  • http://grandrosso.com/js/upload/files/54645268482.pdfIn PDF document text
  • http://bdpq.hungminhits.com/files/uploaded/files/sevimebobagepe.pdfIn PDF document text
  • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/zomemupekowaxokato.pdfIn PDF document text
  • http://thuocnam.xyz/images/files/50657367077.pdfIn PDF document text
  • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/a7bnmlfanlvbgscs2qq7i26ma7/kigutaganojozi.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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