Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://paliukenas.lt/i/File/15556278486.pdf In PDF document text

  • https://toptenstudy.com/upload/files/BodyFile__614226700A969.pdfIn PDF document text
  • http://www.salac.cz/ckfinder/userfiles/files/55408323201.pdfIn PDF document text
  • http://iact2001.com/userData/board/file/vepogomekowuje.pdfIn PDF document text
  • http://agroanaliz.by/upload/editor/files/51340428259.pdfIn PDF document text
  • https://rkdestate.com/userfiles/file/lagezetajufuvolavevete.pdfIn PDF document text
  • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/qqfl8rnim8648sgdvofua0fghc/89626360980.pdfIn PDF document text
  • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614c426d4138d---5913983655.pdfIn PDF document text
  • http://originalbau.hu/imagesfiles/7576026968.pdfIn PDF document text
  • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/87f83d67d047e677a5d578c6e0719cd8/zedivaxaxofaxek.pdfIn PDF document text
  • http://hurtowniagrafit.pl/userfiles/file/torogogupowijuvexajuxe.pdfIn PDF document text
  • http://tongdingjixie.com/d/files/52090498919.pdfIn PDF document text
  • http://bocghedanang.com/media/ftp/file/61819061506.pdfIn PDF document text
  • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/a90bc99fdde245328453befaff3b00fa/60110832434.pdfIn PDF document text
  • http://toflight.mobi/attachment/ckeditor/files/1ec6632c975565e288d11eb408dc9a50.pdfIn PDF document text
  • http://getrade.net/uploadfiles/file/gavukiwi.pdfIn PDF document text
  • https://esperanzadeavila.com/fotos/file/20916953574.pdfIn PDF document text
  • https://floridainvestment.cz/files/file/3729426375.pdfIn PDF document text
  • http://brkvinc.com/userfiles/file/78599291755.pdfIn PDF document text
  • https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/zanagekomo.pdfIn PDF document text
  • http://ariogalospspc.lt/userfiles/file/31519921178.pdfIn PDF document text
  • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/1f551ea1adadddde81641a069897dd7d/30981271942.pdfIn PDF document text
  • http://scandinavia-ex.com/images/blog/file/65406210633.pdfIn PDF document text
  • http://quaretti.it/userfiles/files/lunopapad.pdfIn PDF document text
  • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144c92d617a1---58478279910.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=my+call+recording+historyPDF 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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