Malicious PDF — malware analysis report

Static analysis result for SHA-256 50fd7e40fb603730…

MALICIOUS

PDF

53.8 KB Created: 2021-09-07 18:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 30369d9dc60fc6c35eb920a938c04a4b SHA-1: 5d9fdd38ff54049f8275936b25a14a90bff2952e SHA-256: 50fd7e40fb603730b678dbc602861f168d332afc31bdea55349212fd1455b353
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to compromised websites, indicating a phishing or malware distribution attempt. The heuristic firings suggest the document is part of a link farm designed to redirect users to malicious content. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7181

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 http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1608b04efef4be---telusixolonabizotup.pdf In PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/28592b30ca193a7a616acb87d6f0c196/23541385729.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/stg6ups3cnqig9tpas5bnmfbr3/zotijejazupomapixipu.pdfIn PDF document text
    • http://www.euro-fly.eu/userfiles/files/toxozazenodorepobafiwoxo.pdfIn PDF document text
    • https://mospolytech.ru/storage//files/74689712980.pdfIn PDF document text
    • http://live-lessons.net/lcj/web/uploads/assets/file/lidikopesu.pdfIn PDF document text
    • http://cnp-inc.com/ckupload/files/41082243884.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d683e779c7a---31940793548.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/a5cb038ef9926338a9e8c4b7255c9a00/botokubigaw.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/1d7803fbea9004b6f61564551e7593d3/ravafesefunarukerolanunu.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a391ecc26---gumepalovebusedufozixiji.pdfIn PDF document text
    • http://keralatravelpath.com/uploads/file/duwadudawidudizimo.pdfIn PDF document text
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161055694b25e0---40679692037.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/77185268325.pdfIn PDF document text
    • http://iiiemjobs.com/FCK_Editor_Images/files/wosezukexediw.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/643gv16mguslq3t8cvkghodub6/gaxowixedafakomimom.pdfIn PDF document text
    • http://aroma-es.site/yamituki-n/uploads/files/gifonogu.pdfIn PDF document text
    • http://linpus.com/app/webroot/userfiles/files/59841034263.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/lapejisuferun.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612b73a183d3d---71175099192.pdfIn PDF document text
    • https://fwullong.com/upfiles/editor/files/mejixamik.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/30125735721.pdfIn PDF document text
    • http://shreyaghoshal.com/konadnew/userfiles/file/torufevilolef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=real+estate+customer+enquiry+form+format+pdfPDF link annotation

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