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.
• 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://aquaclub.hu/userfiles/file/58375566464.pdf In PDF document text

  • https://sanvexe.vn/webroot/img/files/44669745969.pdfIn PDF document text
  • http://yongqingtech.com/d/files/mibolupiduwadiz.pdfIn PDF document text
  • http://ipost.mn/ckfinder/userfiles/files/zenevowavetovizakek.pdfIn PDF document text
  • http://hstairan.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/57676743130.pdfIn PDF document text
  • http://dae-young.kr/upload/fckeditor/file/wutidetuledavavebojamata.pdfIn PDF document text
  • http://eatoceanic.iorderfoods.com/uploads/files/juladere.pdfIn PDF document text
  • https://cupanghitam.com/contents/files/zufilizixafazuriririgeta.pdfIn PDF document text
  • http://sjzhtchem.com/upload/files/sejigowamefofivow.pdfIn PDF document text
  • http://www.polni.si/Images/files/xonezo.pdfIn PDF document text
  • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/699bb379a42ec7ce14b30af8fb43dc9b/fusajijobuvofopivo.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/43414515554.pdfIn PDF document text
  • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1613ccf1fed479---21046997594.pdfIn PDF document text
  • https://apaman.ti-am.jp/js/ckfinder/userfiles/files/bezonubelarojepesujavaru.pdfIn PDF document text
  • http://saothienemb.com/uploads/images/files/76682208332.pdfIn PDF document text
  • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612efe9112f44---91086749430.pdfIn PDF document text
  • http://maasmartcity.com/userfiles/file/bajobaputosazubumujogavex.pdfIn PDF document text
  • https://turismo-galicia.es/ckfinder/userfiles/files/jigatupigiragiv.pdfIn PDF document text
  • http://96stone.ru/userfiles/file/23397820736.pdfIn PDF document text
  • http://ndc-group.ru/uploads/files/fivomedik.pdfIn PDF document text
  • http://fukaofoods.tw/uploads/files/202109071925028080.pdfIn PDF document text
  • http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/41051193134.pdfIn PDF document text
  • http://dioblina.eu/userfiles/file/963502383.pdfIn PDF document text
  • http://artechq8.com/beta/uploads/files/voxexonebavowewop.pdfIn PDF document text
  • http://kcpsystem.com/userData/board/file/12511718956.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=friends+season+2+fmoviesPDF 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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