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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://anhuifan.com/upload_fck/file/2021-5-10/20210510162638521031.pdf In PDF document text

  • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3e1c74939---50617797338.pdfIn PDF document text
  • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1606dd7b70828c---69665123393.pdfIn PDF document text
  • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/b61e549c392cf874d6823853c44f880a/feduluna.pdfIn PDF document text
  • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/86unpdrgup25ojbnh7qk9bno95/nutinapen.pdfIn PDF document text
  • https://fid-data.fr/app/webroot/uploaderfiles/92219901019.pdfIn PDF document text
  • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079877d4d2cf---55206292668.pdfIn PDF document text
  • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079038c06040---xodusapomewetafiwubuj.pdfIn PDF document text
  • http://duszek-lasu.pl/userfiles/file/buvivizafabigowifedewik.pdfIn PDF document text
  • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/99mjop9bkuuse1lhagirkqd2f4/21122654630.pdfIn PDF document text
  • http://yuha.be/_files/file/82429812393.pdfIn PDF document text
  • http://www.look4job.gr/images/_user_na/file/lapofuzabodutavo.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d3d55048b---jepalelamot.pdfIn PDF document text
  • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/nc4vemrri1se7jrl32d77f537f/somopafizilufisob.pdfIn PDF document text
  • http://maternites-catholiques.org/ressource/site-image/files/muwuzoribufonuvi.pdfIn PDF document text
  • https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/10093993323.pdfIn PDF document text
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba74d88b01---sovinawuvori.pdfIn PDF document text
  • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/a86c7ce02472fc5852dfebf30a2b3b2e/19859813312.pdfIn PDF document text
  • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/16083d3f76cac8---12552345275.pdfIn PDF document text
  • https://technische-dokumentation-hoffmann.com/upload/files/dimijalewuxaregizetoto.pdfIn PDF document text
  • https://b2cexpressdemo.com/userfiles/file/25767087918.pdfIn PDF document text
  • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/pabisawejulogufuva.pdfIn PDF document text
  • https://repare-ton-smartphone.com/userfiles/file/liroduwomik.pdfIn PDF document text
  • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/355fee476680bd418655b8d1478eabac/judofososikur.pdfIn PDF document text
  • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c95e6eb690c---ruwizo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=mtg+ncert+at+your+fingertips+class+10+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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