Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a43de7012884dc6…

MALICIOUS

PDF

58.2 KB Created: 2021-09-04 16:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5123540a2cb0b373f90624f1f40973af SHA-1: ec1fa4f8526a2090f3bbf558b80f58ada553f851 SHA-256: 7a43de7012884dc6466fe09e8e1dc5a48860d9ae8957e72a5fd21a0677857e53
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6305

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://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/60ff714a69769ee438aaa0dbc577a844/88854875526.pdf In PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897c5dd738e---wawufubokuripikedasowu.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/37948162049.pdfIn PDF document text
    • https://annjulieskarpmo.com/userfiles/file/34171577373.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160756eade28a5---tafaropegu.pdfIn PDF document text
    • http://cyklo-sport-servis.cz/UserFiles/File/jujatimaz.pdfIn PDF document text
    • https://songhong.info/userfiles/file/konoginovi.pdfIn PDF document text
    • https://hinodanang.com/uploads/image/files/11170279426.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/6c6b8c4285435f5b2cad638acc2ad8ec/83824568495.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1e578228d---monuduxagageloni.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/puvagejapav.pdfIn PDF document text
    • http://bjzjygj.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/76271764802.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/630461639dddac5157126231e4b8d684/56990633335.pdfIn PDF document text
    • http://enerjipiyasalarizirvesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca83562b25---jegafubenuxenufow.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/7efd2ca209638987e747bd8e684bb660/85185324884.pdfIn PDF document text
    • http://sendedianqi.com/upload_fck/file/2021-9-3/20210903155502950386.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/0srpeg4r2ta12lc0pb29anti5v/94751540023.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/jsoqhbhgfknfauiqeqv7mrnpa6/jofimig.pdfIn PDF document text
    • http://trendymamy.pl/userfiles/file/wesadimoxozepoxekop.pdfIn PDF document text
    • http://innobiztour.com/FileData/ckfinder/files/20210707_9AA280B41DE8BD59.pdfIn PDF document text
    • https://accu-split.com/userfiles/files/waxenajowud.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16106180af09f9---zunagododirupew.pdfIn PDF document text
    • https://playworkspartnership.ca/sites/default/files/file/63586623042.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/96361410218.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/u4d0rdq5ipp5obk7352c680pf6/44810661591.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/34367492751.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=vocabulary+building+games+pdfPDF link annotation

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