Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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://medvor.ru/uplcv?utm_term=perfect+blue+full+movie+eng+sub PDF link annotation

  • https://costabravas.com/uploads/localidades/files/45763719221.pdfIn PDF document text
  • https://bczenekar.hu/files/file/87033303103.pdfIn PDF document text
  • http://lamardaegu.com/upfile/user/file/retukij.pdfIn PDF document text
  • http://ottotech.center/userfiles/file/pirid.pdfIn PDF document text
  • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16156fd3b25b9a---67119720388.pdfIn PDF document text
  • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161580ae610332---fimezuduvositofam.pdfIn PDF document text
  • http://sgrdpandher.com/userfiles/file/53736062277.pdfIn PDF document text
  • https://retake.dk/ckfinder/userfiles/files/31855848348.pdfIn PDF document text
  • http://epoch-making.jp/js/upload/files/retekaj.pdfIn PDF document text
  • https://bc2000.order-pro.com/ckfinder/userfiles/files/dogizumesokixenagorekinul.pdfIn PDF document text
  • http://archissimo.eu/userfiles/files/mokoxezuvopelutanuz.pdfIn PDF document text
  • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e9c315a145---fopeko.pdfIn PDF document text
  • http://gzcil.com/uploadfile/files/fufazurubarurepu.pdfIn PDF document text
  • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/1opamko8oge84d9str53dthns7/gobulu.pdfIn PDF document text
  • https://hlj-vibration.com/uploads/image/20211002/files/20211002183222.pdfIn PDF document text
  • http://uspeh-kursk.ru/ckfinder/userfiles/files/guwujugomuvofo.pdfIn PDF document text
  • http://vinhthuan.vn/upload/files/40785023703.pdfIn PDF document text
  • http://www.aragonemprendedor.com/userfiles/files/gelomezetibamu.pdfIn PDF document text
  • https://dagvandearchitectuur.be/_files/file/65134563025.pdfIn PDF document text
  • https://warungmimpishio.com/contents/files/73419285083.pdfIn PDF document text
  • http://www.como-grup.ro/fisiere/file/45090976794.pdfIn PDF document text
  • https://comlosumare.ro/userfiles/file/rovotivepopeturoxo.pdfIn PDF document text
  • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16149de9fd6670---20642572462.pdfIn PDF document text
  • https://study-abroad-travel.com/ckfinder/userfiles/file/81201487710.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/23038380802.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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