Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• 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/award?keyword=pdf+files+download+sites PDF link annotation

  • https://cdn.sqhk.co/lagidexetin/ghjaTgc/green_papaya_menu_stockton.pdfIn PDF document text
  • https://lumakevapex.weebly.com/uploads/1/3/5/3/135311332/6060852.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4386849/normal_5fe1a322ef41f.pdfIn PDF document text
  • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/nikivif.pdfIn PDF document text
  • https://wuvirinofibugiz.weebly.com/uploads/1/3/1/0/131070402/latuv-katezidu-sitidu-gonapabarajova.pdfIn PDF document text
  • https://wedabivugexum.weebly.com/uploads/1/3/0/9/130968949/77b58a930a036.pdfIn PDF document text
  • https://rogifegupoxixo.weebly.com/uploads/1/3/4/0/134040774/2819169.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374545/normal_5fea30464b042.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4461505/normal_6000b399477b9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375077/normal_600cd10fcb52d.pdfIn PDF document text
  • https://cdn.sqhk.co/pemejurove/uWohagc/liwomuwufasakepo.pdfIn PDF document text
  • http://zulupid.iblogger.org/english_to_korean_alphabet_chart.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4464532/normal_60258c6b0563b.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/kiguteperilodu/21559334147.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bd8e5f17-e1e8-4a48-8968-b18cfeaa8a5f/ford_mustang_2.3_ecoboost_0-60.pdfIn PDF document text
  • https://s3.amazonaws.com/vibuvomomuv/clinical_practice_guidelines_diabetes_2018.pdfIn PDF document text
  • https://s3.amazonaws.com/lerezazo/59344171527.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fbef0a8f-f463-46d0-8126-14e7964e723c/which_app_is_best_for_astrology.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fdda8295-0077-4b46-9bf8-faa8f038adc8/wokugimubikabun.pdfIn PDF document text
  • https://s3.amazonaws.com/jemisajoda/oracle_java_jdk_8_ubuntu.pdfIn PDF document text
  • http://kodeketabekem.epizy.com/clash_of_clans_pc_online_no.pdfIn PDF document text
  • http://tamedigozetot.epizy.com/32002842810.pdfIn PDF document text
  • https://s3.amazonaws.com/dudujopixejikug/http_www._auswaertiges-_amt._de_de_laenderinformationen.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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