Malicious PDF — malware analysis report

Heuristics 8

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://coretry.ru/uplcv?utm_term=market+leader+pre+intermediate+teacher+book PDF link annotation

  • http://aiswaryamatrimonials.com/fck_uploads/file/95858265610.pdfIn PDF document text
  • https://bocrangsuthammy.vn/upload/files/wisoserimiwalenemikaxoxaj.pdfIn PDF document text
  • http://samtekelektrik.com/files/16124491629.pdfIn PDF document text
  • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141661c7979a---rasaxubelinuzozaxasuporem.pdfIn PDF document text
  • http://nemdanangpho.com/uploads/2021-09-13/images/files/18730223956.pdfIn PDF document text
  • http://yavuzselimvakfi.org/resimler/site/files/dopaparezemuwemazafoxatag.pdfIn PDF document text
  • http://www.stemcellhairclinic.com/files/files/48782907778.pdfIn PDF document text
  • http://tsraccountants.nl/mailing/images/photo/file/33948004392.pdfIn PDF document text
  • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcc907f464---18572497311.pdfIn PDF document text
  • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/a8728f0d4a21089d7e47209aae1adcdc/wodulewuwo.pdfIn PDF document text
  • https://reparation-mobile.net/userfiles/file/wowegifok.pdfIn PDF document text
  • http://sbairs.com/datas/files/begikilemabejezix.pdfIn PDF document text
  • http://gamjagolla.com/uploads/files/4040435696.pdfIn PDF document text
  • http://machulski.com/public/file/57850000192.pdfIn PDF document text
  • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/c4b9e8d564489f984c881cbc44a02efd/vidigavokegazi.pdfIn PDF document text
  • http://sakurahoaanhdao.com/webroot/img/files/73877549427.pdfIn PDF document text
  • http://webinaris.eu/ckfinder/userfiles/publics/files/jexojokoga.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/popatuzikifez.pdfIn PDF document text
  • http://zit-tech.com/userfiles/files/fonuv.pdfIn PDF document text
  • http://tbff-bygg.se/img/files/92090319135.pdfIn PDF document text
  • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614165bb9e269---rasoloxulorefibigezi.pdfIn PDF document text
  • https://samudra99.com/contents/files/pubumenanefivof.pdfIn PDF document text
  • http://krakow4you.pl/krakow/files/33769426585.pdfIn PDF document text
  • http://rotarytattoomachine.co/project-new/christianbook/upload_images/file/88441924070.pdfIn PDF document text
  • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/ul0b2frhsotbtk8hqk7ietgj87/fivazugirepuxevobiraru.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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