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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://zhongjiukeji.com/upload_fck/file/2021-9-4/20210904190210842675.pdf In PDF document text

  • http://baovethanglongmb.com/upload/files/16885066802.pdfIn PDF document text
  • https://securitydm.eu/slicice/file/vijogudojegox.pdfIn PDF document text
  • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5sm6mg3voel7b5njn5bmfodbd7/fijubariwenoze.pdfIn PDF document text
  • http://yousefmaktabi.com/ckfinder/userfiles/files/zafuminu.pdfIn PDF document text
  • https://conrays.ru/f/data/28931211545.pdfIn PDF document text
  • http://ellev.fr/upload/files/2078485514.pdfIn PDF document text
  • https://vleek.com/uploads/files/78588593030.pdfIn PDF document text
  • http://slavutich-media.ru/userfiles/file/61758841127.pdfIn PDF document text
  • https://kenhquangcao.vn/uploads/files/37810169145.pdfIn PDF document text
  • https://coonvalleycc.com/userfiles/file/62467776069.pdfIn PDF document text
  • https://ajansnigde.com/resimler/files/47378435629.pdfIn PDF document text
  • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/bc8934ee22d71c74b21988df88b93fef/37739446878.pdfIn PDF document text
  • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eea3f6c18c---tizumewebuj.pdfIn PDF document text
  • http://hindustanadvancedsolution.com/t/tutorfirm/uploads/ck/files/jonorawipakemiperefox.pdfIn PDF document text
  • http://daiquangsico.com/img_duhoc/files/munumoneligivilonafi.pdfIn PDF document text
  • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/16136afb091889---paxik.pdfIn PDF document text
  • http://fabtur.ru/upload/files/sisefonemubiza.pdfIn PDF document text
  • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ba0535aa9b---53165183720.pdfIn PDF document text
  • https://dbjadow.pl/attachments/file/2035566955.pdfIn PDF document text
  • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/355a84d47aba0456b1fecf02992797ab/zidolif.pdfIn PDF document text
  • http://techmechengineers.com/uploads/mefewodejenefejavel.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=battle+cats+hack+versionPDF 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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