Malicious PDF — malware analysis report

Static analysis result for SHA-256 d26573044009d955…

MALICIOUS

PDF

62.5 KB Created: 2021-09-24 07:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0ecd6da3d6b20d7e9063c036fac0b9e5 SHA-1: 7e06c3727bc4b0b77efbeef54daf733fe63af61b SHA-256: d26573044009d9551b83af903ad5816d7f3614965f89314ea6ee5ce129871f98
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to domains associated with compromised Content Management Systems (CMS) or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The primary attack pattern involves luring users through a malicious attachment to a PDF that hosts a collection of potentially harmful links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4598

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://agcslohian.com/userfiles/file/57483959126.pdf In PDF document text
    • http://dogoxuavanay.vn/uploads/files/xafan.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161310196a79f4---88363154450.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/161489fc7d1081---jiraxutu.pdfIn PDF document text
    • https://dcicz.org/userfiles/file/bakugageg.pdfIn PDF document text
    • http://bishnutoursandtravels.in/userfiles/file/56761467643.pdfIn PDF document text
    • https://pharmawell.eu/ckfinder/userfiles/files/fakujexabajuzasesikozax.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9d9437855---60752267597.pdfIn PDF document text
    • http://floresdeserrezuela.com/aym_image/files/xokokifutujagojuviw.pdfIn PDF document text
    • http://www.valaisconsulting.ch/file/75323422926.pdfIn PDF document text
    • https://beysukonaklari.com/ckfinder/userfiles/files/bebirozetobumitufedifupo.pdfIn PDF document text
    • http://xn--h1agcmh.com/ckfinder/userfiles/files/93746902162.pdfIn PDF document text
    • http://laptopplus.be/app/webroot/files/userfiles/files/24187211174.pdfIn PDF document text
    • http://stagelight.pl/userfiles/files/87975446417.pdfIn PDF document text
    • http://tuivaivietnam.com/uploads/files/fomewowopesozat.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/2cff2e135442b03ba4b54d26bbc7845d/xureforagebefa.pdfIn PDF document text
    • http://bedrucken24.de/userfiles/file/refokidizuxob.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/93417756459.pdfIn PDF document text
    • http://1-sanya.com/blog_images/blog_/file/29513839809.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c15ac6200d---13930397124.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/tunanijobebame.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/forebos.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/54381532553.pdfIn PDF document text
    • http://gocep.org/data/userfiles/files/49329477443.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=sort+android+apps+alphabeticallyPDF link annotation

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