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
• Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
  Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
• 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://vilenefex.ru/123?utm_term=internet++manager+apk+for+windows+8 PDF link annotation

  • http://autocredit.moscow/2431902877hlj3l.pdfIn PDF document text
  • http://logoped-samara.ru/civilization_revolution_2_plushm0d6.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4380675/normal_60563b772e3ed.pdfIn PDF document text
  • http://study-english-04.space/how_to_change_measure_scale_inm5ve5.pdfIn PDF document text
  • http://worldthailand.fun/informacion_del_billete_de_100_lempirasj414h.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4407299/normal_603f109ea5380.pdfIn PDF document text
  • http://baltika-trans.ru/can_i_tow_with_a_rav49m3eu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4476436/normal_6045f611c5e47.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/e1c1b1dc-4681-458b-b1e2-8ac0bcc143f2/nordictrack_activate_warranty.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/45c6f1dd-5a5c-47d4-a917-5648741686cb/jukesejepozef.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6d9724ed-0ed1-47f4-aada-a9c50fbe191a/ratomupov.pdfIn PDF document text
  • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_629657f828bd491ba8180862f6807ae3.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/1e04b6ec-cffc-4b99-a6a8-29b05a4568d4/78038976973.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c40d82c6-1856-421d-8d5a-fb7be1de49d5/53406319849.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/ef50014b-4941-4444-a323-cf62304b9e2b/wuwosoduzazifo.pdfIn PDF document text
  • https://a519209a-2b0a-481f-9fe9-460c873bdc80.filesusr.com/ugd/270e53_779a6cd209934a6c910814f2480c9d54.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/cdea9768-973e-4203-9621-72b1ecff1f56/life_operating_grant.pdfIn PDF document text
  • https://48e5b1ff-25fb-49a4-826b-3ad3f3a15688.filesusr.com/ugd/0d632a_5aa4258b279548ceb323390be2ad1b31.pdf?index=trueIn PDF document text
  • https://uploads.strikinglycdn.com/files/f5b4e929-76ca-473d-a966-c3849c6e5fe0/comentario_de_texto_bodas_de_sangre_acto_1.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/73682203-bb8c-47c6-bc84-47ff4ab73971/beriv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/599013b2-7888-4178-8428-2b6fc0c676c9/17492642418.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
  • https://savannah.gnu.org/projects/freefont/In PDF document text
  • http://www.gnu.org/licenses/In PDF document text
  • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
  • http://scripts.sil.org/OFLIn 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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