Malicious PDF — malware analysis report

Static analysis result for SHA-256 45f49ea69ce0f0c1…

MALICIOUS

PDF

65.1 KB Created: 2021-07-25 18:02:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b743970183c6f46237111fc9a24a8e7d SHA-1: 8f4e5ed6ba062add1fc1700a1079a7a2b07b40a9 SHA-256: 45f49ea69ce0f0c16cfb5df737c03f95ba4d517006da45d13529cad0f7c9f09b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of links pointing to external websites, many of which are hosted on compromised WordPress installations. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm structure, and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' specifically flags compromised CMS uploads. This suggests the PDF is designed to lure users to these sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6381

Heuristics 5

  • 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 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
  • 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://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad2fac161---31428536012.pdf In PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160719b1124890---zetidafatusabuwivi.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608835428c37e---49109842465.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160825f2a99dd0---nizofet.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf675d020c---82383291308.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/f39388904261d011eb10b85caaad896d/bojumivuxonuzi.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/41304562375.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/1trqrg45tu0qhfjbj2ft3kee5i/77892580967.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/cf5832ad70e0d9fc834ba93e64e6ae97/65911720150.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/mewurosumat.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/pujun.pdfIn PDF document text
    • https://alyosserspneed.com/userfiles/files/kezujobibukurewirizijege.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070a37fe47c1---xigurudabivijufobipumiw.pdfIn PDF document text
    • http://langmypham.com/luutru/files/nedirozixarebewugumamulun.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f7ab8608d---sojapuxubaxeduzuw.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/zukatetavuv.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/ligepulifenedekagusupiza.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dfe80618157---bixidebedofuva.pdfIn PDF document text
    • http://koreaseals.com/ckfinder/userfiles/files/zisawoguzemajukidanit.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c8aa3b24601---fabusubeku.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b700a0eea5c---37216921921.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/d99338c417d92472e0dd859f3c3dc045/rakutugebok.pdfIn PDF document text
    • https://gionggiacam.com/ckfinder/userfiles/files/papiwafolesa.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1be5d5a9bc---98987269679.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=igf+1+lr3+dosePDF link annotation

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