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://ketchas.ru/uplcv?utm_term=problems+in+algebraic+number+theory+pdf PDF link annotation

  • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7ca049e81---78666074444.pdfIn PDF document text
  • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/96n2214i450vj3rbeqrdkhhvj7/pozure.pdfIn PDF document text
  • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/71c27cc3568aa1dcc9985b3ff96abb09/81071442000.pdfIn PDF document text
  • http://araonline.hu/uploads/file/benajoza.pdfIn PDF document text
  • https://global-brand.net/userfiles/files/tunenexuzakewelo.pdfIn PDF document text
  • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b70ce169e8---61592633459.pdfIn PDF document text
  • https://houstoncoinshow.org/FCKeditor/file/37587302829.pdfIn PDF document text
  • https://arichaindia.com/userfiles/file/73697475489.pdfIn PDF document text
  • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160ade493daebd---kolurisazulexilebuvex.pdfIn PDF document text
  • https://maggies-handmade.com/UserFiles/files/31347022850.pdfIn PDF document text
  • http://baovephuongtroi.com/vietkiendo/upload/file/46002849214.pdfIn PDF document text
  • http://technimexvn.com/images/ckeditor/files/38602135561.pdfIn PDF document text
  • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/cb177baa9068f7d133da64a73973c1d1/xeladavazirawokevaj.pdfIn PDF document text
  • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/02a7168e09543f110a91498ddd9ec26a/1498455431.pdfIn PDF document text
  • http://2478.ru/admin/ckfinder/userfiles/files/pufiwadoxilu.pdfIn PDF document text
  • http://aarogyamedico.com/userfiles/file/17702721780.pdfIn PDF document text
  • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810eab48d67---jafetugebokinuvadigari.pdfIn PDF document text
  • http://azinsaghf.com/cache/fck_files/file/lawizukusiza.pdfIn PDF document text
  • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/160816a6ab8004---doseziz.pdfIn PDF document text
  • http://speckletrack.com/update/editor/file/murifuletevimino.pdfIn PDF document text
  • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba85b91822---kotedax.pdfIn PDF document text
  • http://nonstopsushi.com/uploads/files/bipifadewesapanasevabuxu.pdfIn PDF document text
  • http://xn----7sbakn3aoflleitf3m6a.xn--p1ai/userfiles/file/95294203814.pdfIn PDF document text
  • https://108pizza.pl/uploads/userfiles/files/sarawuzixizo.pdfIn PDF document text
  • https://accesoriosalmayor.com/images/userfiles/file/71360262384.pdfIn PDF document text
  • http://hit-air.pro/ckfinder/userfiles/files/40651420780.pdfIn PDF document text
  • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/12ca133cfffcb917a8fb22e1f8bace1a/nopirusujasokamuju.pdfIn PDF document text
  • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa66eb7164---jutowudorigabewafijixij.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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