Malicious PDF — malware analysis report

Heuristics 6

• 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• PHP webshell / backdoor source high WEBSHELL_PHP
  The file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
• 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.
• 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://crophysi.ru/wb?keyword=fluoroscopy%20guided%20hip%20joint%20injection In PDF document text

  • http://evilcheats.fun/josakebobumjdewt.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4415742/normal_601a3cb61377a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4488137/normal_6014114a27d9b.pdfIn PDF document text
  • https://sotemupavunu.weebly.com/uploads/1/3/1/4/131413148/xetusakez.pdfIn PDF document text
  • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/patifesoze.pdfIn PDF document text
  • http://leftoutclub.com/81987504495ee0po.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4370304/normal_5ffb6799e6dc5.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd60c0043b00.pdfIn PDF document text
  • http://noksipals.online/megaman_fan_gamesg3uds.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4386334/normal_60081dfd115e1.pdfIn PDF document text
  • http://prizinsta24.online/87567702815szctp.pdfIn PDF document text
  • http://drive4mclanemilwaukee.com/starlight_city_car_racer_traffic_mask_3d7n2a2.pdfIn PDF document text
  • http://kraftmann.su/39829938430bxh0m.pdfIn PDF document text
  • http://gonzo-3d.com/zoom_video_calling_app_free_downloadlw27s.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://bunurakugixopa.rf.gd/http_android-_1._com_clash_of_clans.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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