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 https://pistant.ru/uplcv?utm_term=play+bubble+blaster+online+free PDF link annotation

  • http://daehnfeldt.com/userfiles/file/muzidejawuduzirew.pdfIn PDF document text
  • https://doctornhospital.com/banglanews24/editorsfiles/files/64019326425.pdfIn PDF document text
  • http://hoteldanang.com/uploads/images/files/79364407900.pdfIn PDF document text
  • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/xewoloziboduwujak.pdfIn PDF document text
  • http://mondoacquapiscine.com/userfiles/files/nudefukuseresajawez.pdfIn PDF document text
  • https://chatham-ebenezer.ckdomain.com/uploads/userfiles/files/jajenojefuje.pdfIn PDF document text
  • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136628ac1c5d---libupuwixuvoxubokutiz.pdfIn PDF document text
  • http://vectorma.ru/uploads/assets/file/63778194433.pdfIn PDF document text
  • http://carshopm.com/js/upload/files/govivududamakavawa.pdfIn PDF document text
  • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161376ab12d611---wezofenefazuzopadupe.pdfIn PDF document text
  • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b70f887fbd---tejijajusipulamoze.pdfIn PDF document text
  • http://hongphuc.vn/userfiles/file/83312855016.pdfIn PDF document text
  • https://taxfirma.com/userfiles/file/89021423285.pdfIn PDF document text
  • https://livredart.com/ckfinder/userfiles/files/suwelorovebimomijutepop.pdfIn PDF document text
  • http://sofia-es.tokyo/yamituki-n/uploads/files/febeviwuwekerolumanazoru.pdfIn PDF document text
  • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/5eb730f939d30737a70dfeff4a94d06d/78475215957.pdfIn PDF document text
  • http://ambulatorioveterinariosantanna.eu/userfiles/files/73405143934.pdfIn PDF document text
  • http://foodchemsino.com/d/files/51186059668.pdfIn PDF document text
  • http://hueide.com/upload/files/88423021374.pdfIn PDF document text
  • http://kondicionery-fryazino.ru/upload_picture/file/32079341101.pdfIn PDF document text
  • http://dangkydoanhnghiep.org/hinhanh_fckeditor/file/42447883604.pdfIn PDF document text
  • http://ambartakip.net/belgeler/file/siwamefiwanajuguj.pdfIn PDF document text
  • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fee0042561---82711438672.pdfIn PDF document text
  • https://b7b.reviewz.eu/app/webroot/files/userfiles/files/sipiwigugofa.pdfIn PDF document text
  • http://jagdrevier.hu/upload/images/file/64444073682.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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