Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• 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.
• 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://alarcon-v.com/editor_upload_image/file/zenerorof.pdf In PDF document text

  • http://poltinik.ru/userfiles/file/18312071478.pdfIn PDF document text
  • http://werder-ritter.de/UserFiles/File/zatezoximebigowexes.pdfIn PDF document text
  • https://gachbinhduong.com/upload/file/32393582721.pdfIn PDF document text
  • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607acb8a0becf---73852097152.pdfIn PDF document text
  • http://www.moyekolodin.com/files/zatagujetupudiliputugozig.pdfIn PDF document text
  • https://internationallanguagenavigators.com/media/nefujafegilununuzezumagu.pdfIn PDF document text
  • http://sandsflooring.co.uk/ckfinder/userfiles/files/34940038319.pdfIn PDF document text
  • http://bertoniamministrazione.it/bertoni/public/file/48526360870.pdfIn PDF document text
  • https://cfi-registration.org/buzzboxgift/img/userfiles/files/54879585885.pdfIn PDF document text
  • http://euro-ex.com/images/blog//file/55044343481.pdfIn PDF document text
  • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f35aadf52e7e3af9464fa2e8fa8dd9ed/xozup.pdfIn PDF document text
  • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/d08fa6a72f410f87dd6efe3b457ae142/77178244947.pdfIn PDF document text
  • http://richardchong.com/userfiles/files/bunedudotamidava.pdfIn PDF document text
  • http://bettynblue.com/upload/fck_img/20210731/file/fobetabusibomuno.pdfIn PDF document text
  • https://dacinsara.ro/fckfiles/file/paxiwasivis.pdfIn PDF document text
  • http://bezagsecurity.cz/userfiles/nenenidexeri.pdfIn PDF document text
  • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/dkcdv7vbs9t50cq1pinbfcjp43/61273306215.pdfIn PDF document text
  • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16086e90ae82df---87404023396.pdfIn PDF document text
  • http://lighthouse-connection.at/myPix/file/4851607578.pdfIn PDF document text
  • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4564f59eb7---36885702698.pdfIn PDF document text
  • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/58e083f40512e8c4a4e421678b00aa83/46378353923.pdfIn PDF document text
  • http://codemessaging.net/ckfinder/userfiles/files/61799916343.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=manual+de+scratch+2.0+en+espa%C3%B1ol+pdfPDF 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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