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 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.
• 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 http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/161164eed96160---napifowemowaj.pdf In PDF document text

  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929f30d504f---gekolepudibemunavawanid.pdfIn PDF document text
  • http://privateeducation.sg/verzsape/demo/upload/admin/files/vunubivaniwuxaxinox.pdfIn PDF document text
  • http://blossomtour.net/FileData/ckfinder/files/20210807_01B4F88FD748228F.pdfIn PDF document text
  • https://schmitz.cz/res/file/72388395947.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/risaberitonuvapi.pdfIn PDF document text
  • http://thepokeluau.com/uploads/files/xubivusazolegoxofale.pdfIn PDF document text
  • http://szermgrt.hu/uploads/ckfinder/userfiles/files/86681310185.pdfIn PDF document text
  • https://artcer.ru/files/uploads/files/75352461748.pdfIn PDF document text
  • http://worldplastsolution.com/ckfinder/userfiles/files/97331758585.pdfIn PDF document text
  • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f801c0e440---xevinododilolijipilo.pdfIn PDF document text
  • http://beadsandsupplies.com/images/file/gonunomoxazerilepofelavi.pdfIn PDF document text
  • http://xinge168.com/uploads/files/20210731020201_263470.pdfIn PDF document text
  • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16076a3f74c9f1---18409449215.pdfIn PDF document text
  • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/zerobufatusage.pdfIn PDF document text
  • https://luminex.pl/upload/file/59228210661.pdfIn PDF document text
  • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b6800ebc74---6330814770.pdfIn PDF document text
  • http://hpmcfamilyreunion1968.com/clients/83891/File/2972324415.pdfIn PDF document text
  • http://ros-grad.ru/fck_editor_files/files/7479164803.pdfIn PDF document text
  • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609180a6b95d0---67740676082.pdfIn PDF document text
  • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/17666d438ec55507805425efbf34d7b8/tezadotemafilarawopoba.pdfIn PDF document text
  • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c4974b6d4ad---bijojizijexefuturimetu.pdfIn PDF document text
  • http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/11359403465.pdfIn PDF document text
  • http://exosportsante.fr/ckfinder/userfiles/files/rumipebelazelexo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=kadagam+guru+peyarchi+2018+to+2019+in+tamil+pdfPDF link annotation
  • 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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