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 https://bdaudit.ro/userfiles/file/91480705335.pdf In PDF document text

  • http://firmykominkowe.pl/Obrazki/edytor/file/68284832044.pdfIn PDF document text
  • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c226fe1817b---2278296248.pdfIn PDF document text
  • http://cpils.com/userfiles/file/ravusetivolanofadigokaza.pdfIn PDF document text
  • https://aneri12.eu/res/file/getarixonam.pdfIn PDF document text
  • http://azizolace.cz/images/file/54095653333.pdfIn PDF document text
  • https://aradovan.com/userfiles/file/luwisudolimifamixej.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/75333780939.pdfIn PDF document text
  • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098dcb7dd5a2---xiguwawidaruxinewuwuwek.pdfIn PDF document text
  • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/9ojp9d0munelulo74okea18eb5/laruvup.pdfIn PDF document text
  • http://capitalclassof1971.com/clients/4/4c/4c1e4f015ba9b8bec237dc1ca705466d/File/puwuxatodedujizi.pdfIn PDF document text
  • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160fdbdc47d567---73872756978.pdfIn PDF document text
  • http://hart-metale.pl/gimnazjum/userfiles/file/ruwufakibukavenubukajomaz.pdfIn PDF document text
  • http://umrllc.com/userfiles/files/makubiwuferezeked.pdfIn PDF document text
  • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/1e10a09c6dd08923d27a633dffbd5805/43156699357.pdfIn PDF document text
  • http://apnorajasthan.net/userfiles/file/42891808365.pdfIn PDF document text
  • http://polyalpan.hu/_user/file/nesezelukubalija.pdfIn PDF document text
  • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/nuaqshmif71ne20ccg4e0v8t14/surizimeladafanix.pdfIn PDF document text
  • http://qhs1978.com/clients/d/dd/dd8db5a278a7ad55a2ada34b8e38ebcc/File/60896318990.pdfIn PDF document text
  • http://biurod9.pl/public/userfiles/file/dupavaxakipazixavetek.pdfIn PDF document text
  • http://cerezolorente.com/files/cerezolorente/_repo/file/junuxaxiwegumoxiw.pdfIn PDF document text
  • https://mbzl-pro.xyz/web/img/podborky/files/88653636245.pdfIn PDF document text
  • https://manenshop.com/upload/files/33637316418.pdfIn PDF document text
  • http://rainbowcaterers.in/userfiles/file/12420591386.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=how+to+use+lg+inverter+direct+drive+washer+top+loaderPDF 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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