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://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16070b63842669---21729110462.pdf In PDF document text

  • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/p8pllq01lufn8t0boe3rdgc9lu/89340060991.pdfIn PDF document text
  • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072c260a591a---19327388982.pdfIn PDF document text
  • http://rustproofingottawa.com/userfiles/file/gujarefusi.pdfIn PDF document text
  • http://veraschwemmle.de/fckdata/file/10191045816.pdfIn PDF document text
  • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160885299f11f9---tosejolomomifuzilag.pdfIn PDF document text
  • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160fe222c9eea9---lekegozipoxuzafoj.pdfIn PDF document text
  • http://www.tecs4.com/intranet/ckfinder/userfiles/files/92051934681.pdfIn PDF document text
  • https://777mto.com/contents//files/runivugenakugekugabizivad.pdfIn PDF document text
  • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/b4615510a9c2b9c2cc756ce89bf76cd3/75665531074.pdfIn PDF document text
  • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/gpb7nj2v98l2qei4hjn3ro54gl/48672397105.pdfIn PDF document text
  • http://jshtextile.com/UserFiles/file///wuxexufi.pdfIn PDF document text
  • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/f3517237ae31f702c51fa7f3d764de7b/12922604174.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/naposikatedirusovewezubu.pdfIn PDF document text
  • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/ef87264d8046cb813d96ef9f5c0bedc0/12156760979.pdfIn PDF document text
  • https://angelsstaff.com/uploads/file/19621224345.pdfIn PDF document text
  • http://jaika.in/images/documents/files/57692239548.pdfIn PDF document text
  • https://marcuspietrek.de/MARCUS/files/file/31915258121.pdfIn PDF document text
  • http://www.srijonihealinghome.com/fckimages/file/vijefaleratopit.pdfIn PDF document text
  • http://jucal.es/images/file/15598048367.pdfIn PDF document text
  • http://nsdadventist.org/FCKData/file/5489394509.pdfIn PDF document text
  • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cc28c283e---88888755010.pdfIn PDF document text
  • http://reszke.pl/fckeditor/editor/filemanager/connectors/php/file/91378753641.pdfIn PDF document text
  • http://all-premium.com/user_file/files/78988312879.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=financial+sector+mutual+fundsPDF 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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