Malicious PDF — malware analysis report

Heuristics 10

• 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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://sma-dfgg.org/site/admin/file/koruzulaluloxek.pdf In PDF document text

  • http://old.smartplus.pl/ckfinder/userfiles/files/xuwabagufibuwa.pdfIn PDF document text
  • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1613889fd0437c---77543801516.pdfIn PDF document text
  • http://nebovsem.ru/app/webroot/files/files/vofezejatakitejedakujade.pdfIn PDF document text
  • http://bellamy.tw/uploads/files/202109132204569440.pdfIn PDF document text
  • http://basaritarim.net/admin/editor_resim/file/naxafitadetiburedixuxiwa.pdfIn PDF document text
  • http://4998horo.gmmwireless.com/contents/files/34698428324.pdfIn PDF document text
  • https://kanalprofi.at/UserFiles/file/jidinuzufepezuguxazazemes.pdfIn PDF document text
  • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/65blef1ai3na8o5q8nr2hvg9d6/fojoxamojexozexivaguguj.pdfIn PDF document text
  • http://heorungminhphat.com/luutru/files/tagokinedamoxe.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/16172744528.pdfIn PDF document text
  • http://albarossa.jp/js/upload/files/madadovugesivisoleroz.pdfIn PDF document text
  • http://3gr-group.com/ci/userfiles/files/sirubevis.pdfIn PDF document text
  • http://lacasedescaraibes.fr/file/67859753595.pdfIn PDF document text
  • http://driver-jazda.pl/upload/file/26677521897.pdfIn PDF document text
  • http://kingsap.com/file_media/file_image/file/kejef.pdfIn PDF document text
  • https://doublehair.center/upload/ckfinder/files/tobisisopijinabojix.pdfIn PDF document text
  • https://greenvalleykerala.com/ckfinder/userfiles/files/74989301493.pdfIn PDF document text
  • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/07htb93fjd0po35iorbv6qt1at/ziwitisoratimixazidevala.pdfIn PDF document text
  • http://adimhukuk.com/resimler/files/fisidenomuwukosezevizuru.pdfIn PDF document text
  • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141b32d17993---61255731860.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+to+get+past+human+verificationPDF 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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