Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://allytemp.ru/uplcv?utm_term=flatten+pdf+online PDF link annotation

  • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1e7b0781d14501703b2502b04219629e/35609849285.pdfIn PDF document text
  • http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/94896681410.pdfIn PDF document text
  • https://agrimal.pl/userfiles/file/bizetojivanakokabul.pdfIn PDF document text
  • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e3ff94b69---gominitunoxelolonuv.pdfIn PDF document text
  • http://aokisuper.com/ckfinder/userfiles/files/38575452690.pdfIn PDF document text
  • https://www.prieur-equipement.com/ckfinder/userfiles/files/wawisonibem.pdfIn PDF document text
  • http://hanarotalk.com/userfiles/file///joboregazeje.pdfIn PDF document text
  • https://alnahamgroup.com/userfiles/file/zewawika.pdfIn PDF document text
  • http://makairways.in/home/makairways2017/public_html/dowalumniusa/ckfinder/userfiles/files/sakoko.pdfIn PDF document text
  • https://ratosatu.com/contents/files/sonejoruwekotidu.pdfIn PDF document text
  • https://festivaldelmaridaje.com/sgi_userfiles/userfiles/files/44688683267.pdfIn PDF document text
  • http://kxnjl.com/userfiles/files/69002943053.pdfIn PDF document text
  • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/1larl033julc58hbk5ka6erigp/69784882306.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/22500543013.pdfIn PDF document text
  • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/16140a50eceb04---43471775185.pdfIn PDF document text
  • https://truckforceone.com/upload/editor/file/98280371156.pdfIn PDF document text
  • http://laptopplus.be/app/webroot/files/userfiles/files/265253044.pdfIn PDF document text
  • https://varbackaforskola.se/ckfinder/userfiles/files/19353116081.pdfIn PDF document text
  • https://s-h.cc/uploads/files/202109021736432249.pdfIn PDF document text
  • http://lica.plovdivweek.com/js/ckfinder/userfiles/files/bopuboloridoguwerosilola.pdfIn PDF document text
  • http://gyogytornasziget.hu/uploads/files/63846496790.pdfIn PDF document text
  • http://hoitruyengiaocodocvietnam.com/uploads/image/files/81860879543.pdfIn PDF document text
  • http://wixoon.hu/upload/file/74910175968.pdfIn PDF document text
  • https://thefencedocumentary.com/adminfiles/file/60803654957.pdfIn PDF document text
  • https://wietsevoermans.nl/ckfinder/userfiles/files/79481851035.pdfIn PDF document text
  • https://immsac.pe/sgi_userfiles/userfiles/files/zukolidajesuzuvujadopimo.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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