Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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 https://coretry.ru/uplcv?utm_term=advanced+java+swing+pdf PDF link annotation

  • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/drbnqtgu42r12tjsaqqetdgeej/jukikam.pdfIn PDF document text
  • http://avalon-essenzen.at/userfiles/file/3637940978.pdfIn PDF document text
  • http://ppfi-online.com/userfiles/file/51840247916.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/jiimvud50sinad68agrp468gb4/38446204636.pdfIn PDF document text
  • http://tuhocxuatnhapkhau.com/uploads/ckfinder/files/gobojived.pdfIn PDF document text
  • http://ajtoablakcentrum.com/_user/file/sabebet.pdfIn PDF document text
  • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/57ba54e3329ba9c61753c2ec24e23d7d/1209894609.pdfIn PDF document text
  • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/7b3eaca4cc6f2435a4838e4a7aa706db/mezelane.pdfIn PDF document text
  • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/c86fc76f75820c7d6fddd7971dccafb4/zokekera.pdfIn PDF document text
  • http://viviapalermo.com/userfiles/files/bemoru.pdfIn PDF document text
  • https://deepankarbasu.com/FCKeditor/file/zukulakepuzazedewilopu.pdfIn PDF document text
  • http://www.jobsincrete.gr/images/_user_na/file/fawujuxizemolepide.pdfIn PDF document text
  • http://www.pranabkumar.com/fckimages/file/zeworesipulepubesosapume.pdfIn PDF document text
  • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/9975c93c048a08bf848e2d91e9717454/zatunodigegadikifolenoso.pdfIn PDF document text
  • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/e1b3f69ec6601dfb7d3403449b5f21a9/35234951938.pdfIn PDF document text
  • http://flairpens.ru/uploads/file/80563669864.pdfIn PDF document text
  • https://bursac.net/userfiles/file/gitubawog.pdfIn PDF document text
  • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/16136243acba64---30341766776.pdfIn PDF document text
  • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/rl2igit0a4ilv9fcb8rtv5mu81/37658671748.pdfIn PDF document text
  • http://ksiclub.org/projects/achievemore/admin/upload/fckImages/file/larezigesatigamowi.pdfIn PDF document text
  • http://location-venise.com/italie_documents/files/63566757471.pdfIn PDF document text
  • http://prime42.ru/userfiles/files/fewasaxavegozurojunez.pdfIn PDF document text
  • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/ea52738eabdfafe35d383005ac2b5c09/57809765442.pdfIn PDF document text
  • https://mediaget.com/userfiles/files/puzuxinovof.pdfIn PDF document text
  • 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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