Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f7ed66833d50f4…

MALICIOUS

PDF

61.5 KB Created: 2021-07-07 12:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 36bdb71c2983b9b6f12eab2c0586b65d SHA-1: 23436b385298e4f939aea9febb53d1987ebcfde0 SHA-256: 59f7ed66833d50f4e662a910eee40123422724932bdf5c991ec078824c6a8fa2
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress uploads and disposable hosting sites, likely to redirect users to malicious content. The file's structure and numerous links suggest an attempt to obscure the ultimate destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5356

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://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160892515bbf54---89900071722.pdf In PDF document text
    • https://dildendilecevirievi.com/upload/ckfinder/files/suxuboluj.pdfIn PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/92489811109.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/67de0b42f69c3b399ccaace7e2be3fb1/sajebexitevolilikinurufe.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b482748accf---zojujosalavimimalowetuloj.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c403d0b4e2f---97594421293.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/105u3d6k6kthhi2oost65e8741/51371389069.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/cb7ada477f2c441d5e7389872a84d086/nikawalifopedajazagenise.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160794c8b73343---pisujabifi.pdfIn PDF document text
    • http://citra.cl/userfiles/file/roxovunixopowidedidumujod.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d26a47237e---61777883724.pdfIn PDF document text
    • http://lhs60to70.com/clients/3/32/32806278e47d7e4d905c37b1d6ebf04a/File/rokuwaxabizizaja.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/b4e4b1bbhdc518pkdsfrlmrsrf/63266803779.pdfIn PDF document text
    • http://juha.be/_files/file/bidigoboronixelulurapod.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af75f75d4e0---rezitilababibidajowobop.pdfIn PDF document text
    • https://oklogistic.lv/upload/file/dusesarobalufenufubetanuf.pdfIn PDF document text
    • http://mashtalkandil.com/userfiles/file/navokadedobejapope.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/99eda6c508051df71143ca5b3e6722e0/lolivetovomozukukenam.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/kopimiruli.pdfIn PDF document text
    • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/fc0db4b588f154c057f9c9492c99a0c0/miwerevaredajanifitupevi.pdfIn PDF document text
    • http://oasishs.com/uploads/files/20210630_033437.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/xakalotebisetoniv.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/kubufamapivu.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/43092627664.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccb5c41382c---tesebawusasaxama.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=can+you+bathe+a+baby+bearded+dragonPDF link annotation

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