Malicious PDF — malware analysis report

Static analysis result for SHA-256 3145c2cc4349104a…

MALICIOUS

PDF

59.8 KB Created: 2021-09-02 19:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: bed6ede12ab65440ec9042d82757a261 SHA-1: d4dc8f9a13acaa4078db8d58b6639d60017bfa3e SHA-256: 3145c2cc4349104ad93feb749e70a2c06d3f602e7f3212b8fb6c10442a4678b7
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised websites, suggesting an attempt to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of multiple PDF links on disposable or compromised hosting reinforces the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6433

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://rugsdirect4u.com/uploadedfiles/file/pekefarusijopotix.pdf In PDF document text
    • http://limeitec.com/upfiles/editor/files/mujusalerabanipuxa.pdfIn PDF document text
    • https://sushixusa.com/userfiles/files/fadawu.pdfIn PDF document text
    • http://savitapiti.org/ckfinder/userfiles/files/vaxirusazulopilofodu.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4688c99e8---lujivonuxazenowume.pdfIn PDF document text
    • http://2016montemayorreunion.com/clients/e/e5/e530e98a7ee505477716bae2fe71cdef/File/90468726977.pdfIn PDF document text
    • http://lauraestetica.com/userfiles/files/69608136897.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/c65890f276040ce1ad408d91056e82c1/luwelodonojafovunoduguvi.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/bajikogonikiseguwe.pdfIn PDF document text
    • https://totspotdaynursery.co.uk/ckfinder/userfiles/files/50847273005.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c41ac9cf2ae---gusirotezitodulejib.pdfIn PDF document text
    • https://manualismedicina.hu/fileok/file/lerusagakagefaxezovi.pdfIn PDF document text
    • https://atl-50.com/files/file/ruwezuxabusamazoxe.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3631092c66---tatul.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/43875464804.pdfIn PDF document text
    • http://ahs1968.com/clients/d/dc/dcea35c349c70fb55dca458fc6558ff6/File/23455625591.pdfIn PDF document text
    • http://gpmpoolandspa.com/ckfinder/userfiles/files/20779816065.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/13208469086.pdfIn PDF document text
    • https://tasleemdubai.com/userfiles/files/zuloronezozujajewafeba.pdfIn PDF document text
    • http://kondicionery-elektrostal.ru/upload_picture/file/80203307546.pdfIn PDF document text
    • https://jechrina.gr/FCKeditor/userimages/file/nubodowodox.pdfIn PDF document text
    • https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/oqi2vhc0sji7o4m55i5cdcppfd/xupute.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=rrb+ntpc+detailed+syllabus+pdf+downloadPDF link annotation

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