Malicious PDF — malware analysis report

Static analysis result for SHA-256 501a5e0dfcedcffe…

MALICIOUS

PDF

43.2 KB Created: 2021-09-20 18:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 27169fd006e710f24d86cd318343a7f7 SHA-1: faf3fc6d2f6c5b74659358c16a53562adc9b5d49 SHA-256: 501a5e0dfcedcffe764c673a3aff57cbd19ab131974e339bcc71728552d98255
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as Pdf.Phishing.Trojan and an ML classifier flagged it as malicious. It contains numerous external URIs and is identified as a link farm on disposable hosting, suggesting a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pixomot.ru/uplcv?utm_term=what+is+an+instant+app PDF link annotation
    • https://chogmai.org/ckfinder/userfiles/files/wavanifakivujax.pdfIn PDF document text
    • http://hk-keber.de/images/file/70007987127.pdfIn PDF document text
    • http://weighlessthisyear.com/ckfinder/userfiles/files/mewoxetazev.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///11983957102.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/vu0l6mlbe4np9s6knmd8kpd0tb/zojivurigafexi.pdfIn PDF document text
    • http://erictex.com/ufiles/files/duwimeg.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/karatomosavevofigevebida.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/dugorazisizijopizifasetav.pdfIn PDF document text
    • https://legend-chang.com/UserFiles/files/71362792643.pdfIn PDF document text
    • http://indcms.testingmachines.com/images/file/60717898816.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/kuwaradogefekiw.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/zejiwuv.pdfIn PDF document text
    • http://world-housing.jp/ckfinder/userfiles/files/gosetiguw.pdfIn PDF document text
    • http://ttc-investco.com/img/files/tewazaf.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/7454696620.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/mekodozi.pdfIn PDF document text
    • https://thanaclusterwestgate.leaddeehub.com/userfiles/files/tabudokasejegipatizev.pdfIn PDF document text
    • http://pusheng168.com/uploadfiles/20210901221023.pdfIn PDF document text
    • https://newfrio.com/userfiles/files/7136207824.pdfIn PDF document text
    • https://dom4m.lv/userfiles/files/zukifopizupemo.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614670a6a747e---41910701940.pdfIn PDF document text
    • http://resheto.ru/users_images/fck/file/33074362699.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210902_FC893FA11ABDEA44.pdfIn PDF document text

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