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
• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://maypoin.ru/123?utm_term=update+android+studio+manually PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4413362/normal_6046724be54cd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4484835/normal_5fe8ed953d808.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4459477/normal_60199d4571808.pdfIn PDF document text
  • https://cdn.sqhk.co/loxepafigav/hj3jfGY/pivemixuvirorogutaxan.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393763/normal_603b6e6723a68.pdfIn PDF document text
  • http://getodupelipod.iblogger.org/cataclysmic_variable_stars.pdfIn PDF document text
  • http://lakaxof.iblogger.org/mezevisanevokevorelov.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4379732/normal_5ffba8aceaf4a.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4490364/normal_60097b4bf2b59.pdfIn PDF document text
  • http://toselarasomax.iblogger.org/teoria_del_conflicto_entelman_resumen.pdfIn PDF document text
  • https://cdn.sqhk.co/rawerusiwala/HThgrhd/chicago_greatest_hits_album_cover.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://dc010c70-835d-4b56-8cb0-1e1bda7cab64.filesusr.com/ugd/fb576b_0ee59634d210436c9d1e9524247c3370.pdf?index=trueIn PDF document text
  • https://5c9c3928-af7d-4195-9e43-9647d7263c15.filesusr.com/ugd/508998_d4b965a4133444539dc77c7bbc07e42e.pdf?index=trueIn PDF document text
  • https://968bac2e-1409-45a7-bd11-2c37eba47390.filesusr.com/ugd/c81504_d57b981d6b55421197f8a4a626f93f68.pdf?index=trueIn PDF document text
  • https://87164119-88a6-4d6d-a72f-b109cf2d88b9.filesusr.com/ugd/bd0a66_05d6d11252eb4a3784c563c8666eebf7.pdf?index=trueIn PDF document text
  • https://e20d271a-53e3-41f9-9180-d6cd5f9fd148.filesusr.com/ugd/6cfc61_0ad1e8bdadf44ca6a2ffe28ca723e2da.pdf?index=trueIn PDF document text
  • http://sajafobufa.rf.gd/telonitolajubobikese.pdfIn PDF document text
  • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_190f0acccdb84317afbd26de63cecc57.pdf?index=trueIn PDF document text
  • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_ab092da3f5d04718831db109b8687edc.pdf?index=trueIn PDF document text
  • http://lukigek.rf.gd/edmonton_police_report_accident.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://scripts.sil.org/OFLIn PDF document text

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