Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6b025edd8fffac…

MALICIOUS

PDF

71.7 KB Created: 2021-07-05 08:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 98f8a987e44b63c4cf9ecac8caffcffc SHA-1: dda5d4539999f959f70428d2ef8904b9bd95e6a7 SHA-256: ee6b025edd8fffac2646136feaba0bef6b9210659d819fde8ebf2ccdf238fd37
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, a common technique for executing malicious code within PDF documents. It also exhibits characteristics of a link farm, with numerous URLs pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4729

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://saovietgroup.com/upload/FCK/file/kakamadu.pdf In PDF document text
    • http://villalapinetafavignana.it/userfiles/files/dejurawedazex.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/c86c56b5ccf099cabb827e0a8c1a8255/11025466893.pdfIn PDF document text
    • http://music-summer-courses.eu/upload/files/nutevirikafulejes.pdfIn PDF document text
    • http://chinamakina.com/userfiles/file/54565233398.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/50685882155.pdfIn PDF document text
    • http://hourinkan.net/js/upload/files/noxazepafogo.pdfIn PDF document text
    • http://congtyvima.com/images/Download/73510830401.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1c03d87035---mowek.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/5e4f06d8cdb13ff11675dcf9795425fb/xurotegigaxumomufi.pdfIn PDF document text
    • https://gertiesbloomers.com/kousumi/nulook/upload/fckimages/file/77444208690.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/fhqrplq8ocbhjig4deab0cikr4/gipokegozijeb.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c392ceb5201---37473165233.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0a9cd1557---zetumumepevefuwu.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607720eb80721---36864164332.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf8fdd789de---54470065505.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608395ecbc15a---67449915982.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/617d55a6880f6b83b2b2eaf0278151c7/solibaxisakilaziwajizef.pdfIn PDF document text
    • http://altinay-law.com/images/file/beviro.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-5-4/20210504192045223708.pdfIn PDF document text
    • https://aedwea.com/upload/foto/suzabugaxa.pdfIn PDF document text
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mosejoz.pdfIn PDF document text
    • http://cesmclassof68cheyennewy.com/clients/82478/File/zozotadobem.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e85546c78---67908393139.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=art+laboe%27s+greatest+hitsPDF link annotation

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