Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95337f33b42fef9…

MALICIOUS

PDF

65.1 KB Created: 2021-10-12 16:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 4eee638e2a834285b47d11c2c6f69618 SHA-1: 8704f59ffeb3f2aebb92ccf99c10ceae35427eb4 SHA-256: f95337f33b42fef91b670b3cf5908b09c73a952e61ada7bbaf20e6ef7e843d31
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6403

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://ibookingkr.com/FileData/ckfinder/files/20210914_1470F183BAF5F598.pdf In PDF document text
    • https://tempatpasang.com/contents/files/99535174492.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16148cb514ca66---zegakiv.pdfIn PDF document text
    • http://wuchem.com/upload/files/22762573956.pdfIn PDF document text
    • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/mugugaveporilubawoz.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/365vol12ajv5srrhmf76io0ock/fubagatetuzer.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/tubugidelef.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16155eaf841da8---24803552489.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614b73f9d5ee6---81896929843.pdfIn PDF document text
    • https://rainbowprinter.com/app/webroot/files/file/35489565571.pdfIn PDF document text
    • https://emartdeko.pl/galeria/file/durazabisax.pdfIn PDF document text
    • http://hyunsin.net/userfiles/file/53345830099.pdfIn PDF document text
    • http://opuspointpartner.com/ckfinder/userfiles/files/6214132317.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a7bfcdda278bc6c4d4600aebc7c549db/gixudederewepuzevumuvug.pdfIn PDF document text
    • http://dworbieland.pl/userfiles/file/totuveriwo.pdfIn PDF document text
    • https://hyundainhapkhau.vn/upload/files/6935948158.pdfIn PDF document text
    • http://gcsiva.com/files/userfiles/file/pisexixapawotinus.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/nugebozil.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/5f49c60c33d04852130ed8f244b962c7/podidedapidele.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/7480259649.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/88200526619.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161381f779b48c---mogexitidebonipabedaz.pdfIn PDF document text
    • https://elemental-ia.com/userfiles/file/bozupoto.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/57002727309.pdfIn PDF document text
    • http://snabsz.ru/ckfinder/userfiles/files/mogekefutona.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=the+position+of+fermi+level+in+intrinsic+semiconductorPDF link annotation

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