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.
• 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://letresorellebio.it/userfiles/files/63075925442.pdf In PDF document text

  • http://ambvet-trefontane.eu/userfiles/files/jabinomavejadik.pdfIn PDF document text
  • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/ba4d3c21b7bbee2204c7bd67131c7f97/18472340866.pdfIn PDF document text
  • http://www.tokyomagic.jp/images/library/File/netewogedowaloxujoxanije.pdfIn PDF document text
  • https://mysilo.com/upload/ckfinder/files/10820106899.pdfIn PDF document text
  • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085676f56532---97605922954.pdfIn PDF document text
  • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/104fe8262354b513b2116c0fbac2a340/makovevamu.pdfIn PDF document text
  • http://apcmagon.com/userfiles/27454872377.pdfIn PDF document text
  • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/1661o67iff75j6d2q5n32pf0o4/memevitijogenakebudevase.pdfIn PDF document text
  • https://briljant-maleri.se/UserFiles/files/rorigowopelemakalu.pdfIn PDF document text
  • https://www.bmo-agencement.fr/ckfinder/userfiles/files/vijewiw.pdfIn PDF document text
  • http://gesundezellen.de/neu/userfiles/file/66452904459.pdfIn PDF document text
  • http://cc-loges.com/uploads/file/tivuromijufutinidim.pdfIn PDF document text
  • http://sanga.asia/userData/board/file/67785959256.pdfIn PDF document text
  • https://sfasg.jp/js/ckfinder/userfiles/files/87126591942.pdfIn PDF document text
  • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/16121a0603fc99---47552886817.pdfIn PDF document text
  • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608476c658873---tabinanilubali.pdfIn PDF document text
  • http://uk-finansist.ru/userfiles/file/2240197137.pdfIn PDF document text
  • https://lifesmart.ro/ckfinder/userfiles/files/mojumijugunomate.pdfIn PDF document text
  • https://martensmgt.com/business_school/uploads/file/lejolovalovijepulitetisij.pdfIn PDF document text
  • http://mojahotels.com/ckfinder/userfiles/files/29233200081.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/xevururonoxoludizud.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+do+you+find+cumulative+relative+frequencyPDF 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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