Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d827ff65899c92f…

MALICIOUS

PDF

62.4 KB Created: 2021-07-23 21:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1f7bacc9804be29eb7df60d60660065a SHA-1: 3a084d7734caaa86c85cf41c8f84cc2326adce9a SHA-256: 8d827ff65899c92f3ae4134c2481ee71c44a26ac2975f0a97aaa4319e08e8c7f
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites by disguising the document as a loan payment plan template.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9854

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://rachelrom.com/rescontent/file/ninubobolerodi.pdf In PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/n0gpcsg7f0jdsjf5sc02qbii36/77379540080.pdfIn PDF document text
    • http://www.heksan.com.pl/file/33189637712.pdfIn PDF document text
    • http://intrinhgia.com/admin/webroot/upload/image/files/39826889766.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/69515339929.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/lrsaq6rj5li13qnpvc4qvrvspt/35915613315.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985be6b003f---bewudedatu.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160832fb433f72---moxutejexenu.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/76299492533.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1607da4faa9a2c---75274129101.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/runaxagirugolekukonuz.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/788e6964a78ff12eb8726737c69b28fb/nubirejoxopuxorabujudowo.pdfIn PDF document text
    • http://bpabv.nl/uploadfiles/file/85127826029.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e23a4cefc---dinusaz.pdfIn PDF document text
    • https://kozhikodedeaf.org/admin/my_files/file/56181636215.pdfIn PDF document text
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/7723333ad9636b8778317d901d1a226d/wodasekilitanixatox.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0cfc9e5bbf---71054503225.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5f10819c5---54311522476.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/f8ord8tihuqnmsgdr4aqiqfv25/sawawovulusagazugaromu.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/2671a92e0c6a48aa9af6cc2204214337/wuzijutubidemapawif.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608fb3c2c8e60---50166081129.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a0283536ad0---mijus.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=loan+payment+plan+template+excelPDF link annotation

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