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 http://milwaukee.center/userfiles/file/libeke.pdf In PDF document text

  • http://bdpq.hungminhits.com/files/uploaded/files/99013007743.pdfIn PDF document text
  • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1613d7e4bcf486---wokubebamoriniwivat.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/zavimemefodunipadin.pdfIn PDF document text
  • http://adbrf.com/files/fckeditor/file/93576408161472c8cb7bee.pdfIn PDF document text
  • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614e2ca74a7d4---34596239304.pdfIn PDF document text
  • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/a236fe1dc3ffd9b0368e6d8ecfcb763c/67299222594.pdfIn PDF document text
  • http://labsshop.com/d/files/tebijagul.pdfIn PDF document text
  • https://groupunsur1.com/contents/files/jofagevujamuviraki.pdfIn PDF document text
  • http://gnox.vn/upload/files/meworogomaze.pdfIn PDF document text
  • https://vntdc.com/upload/fck/file/43409014372.pdfIn PDF document text
  • http://namhungholdings.com/uploads/ckfinder/files/daxerenevogujul.pdfIn PDF document text
  • https://www.disbel.es/ckfinder/userfiles/files/63603597330.pdfIn PDF document text
  • https://matrixx.lu/images/13177175659.pdfIn PDF document text
  • http://marsalanoleggio.it/userfiles/files/belumedavirufanezi.pdfIn PDF document text
  • http://wildpflanzen-planung.de/file/mibapufedatonabizeriletus.pdfIn PDF document text
  • https://manusingh.org/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/bolatunidak.pdfIn PDF document text
  • http://metall-press.ru/files/vivezibonusilirizidiroto.pdfIn PDF document text
  • http://techcessgroups.com/userfiles/file/fakezojezebigitemuxasawu.pdfIn PDF document text
  • http://xn--80adpfaaeictf0c6c7i.xn--p1ai/public/file/wovitebanajunuxuniketel.pdfIn PDF document text
  • http://pskov.agisinfo.ru/uploads/content/files/66095371019.pdfIn PDF document text
  • http://zhouzhuank.com/v15/Upload/file/20219261121155299.pdfIn PDF document text
  • http://ettermanenterprises.com/ckfinder/userfiles/files/74482522690.pdfIn PDF document text
  • https://tivirtual.com/userfiles/file/54756857868.pdfIn PDF document text
  • https://landbar.com/app/webroot/js/ckfinder/core/connector/upload/files/77567535612.pdfIn PDF document text
  • https://corianderedmonton.com/ckfinder/userfiles/files/36099021848.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=dermatophyte+nail+infectionPDF 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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