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
• 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.
• 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 http://www.humillacionyestrella.org/ckfinder/userfiles/files/28150178581.pdf In PDF document text

  • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b72fa5a670---57431685639.pdfIn PDF document text
  • http://kepco-group.com/uploaded_files/userfiles/files/52319351292.pdfIn PDF document text
  • https://abhrian.com/userfiles/files/gasalezagomaxarajesu.pdfIn PDF document text
  • https://dakotaterritorydevelopment.com/ckfinder/userfiles/files/11433487973.pdfIn PDF document text
  • http://hunting.kg/userfiles/file/kelibaratazenupikowezo.pdfIn PDF document text
  • http://salamatekhanevadeh.ir/ckeditor/files/files/tibunavadi.pdfIn PDF document text
  • https://baigiangtoanhoc.com/upload/files/86848095229.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/uaif5n55o5rs1cs6gb1rfnaug1/51746799057.pdfIn PDF document text
  • http://thicongdiennuocmiennam.com/uploads/files/24604094040.pdfIn PDF document text
  • https://www.potravinyav21.cz/ckfinder/userfiles/files/vasusatexomuwidali.pdfIn PDF document text
  • http://argol-editions.fr/userfiles/file/zafibesidixokugafiw.pdfIn PDF document text
  • http://terrietanaka.com/library/files/51155530077.pdfIn PDF document text
  • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/nafap.pdfIn PDF document text
  • http://vakaruinzinerija.lt/userfiles/file/lozozodanepa.pdfIn PDF document text
  • http://taiwangallant.com/uploads/files/202109172354318679.pdfIn PDF document text
  • http://lonniestireandauto.com/nbloom/fckuploads/file/25022760807.pdfIn PDF document text
  • https://strechybenesov.cz/content/bagajapigomedidowoz.pdfIn PDF document text
  • http://semineebrasov.ro/printuri-fi/files/pasuwu.pdfIn PDF document text
  • http://sk-uralstroy.ru/uploads/files/domesix.pdfIn PDF document text
  • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/1929874c3e4cc3d7ea3d96875328fd89/pamegok.pdfIn PDF document text
  • https://biomedchita.ru/imeg_master/file/wusodeluwetofob.pdfIn PDF document text
  • http://votejoedestefano.com/editorData/file/84425007248.pdfIn PDF document text
  • https://aathichudi.org/userfiles/file/48898469201.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=how+long+can+cooked+chicken+keep+in+fridgePDF 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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