Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1e427446a85955f…

MALICIOUS

PDF

50.2 KB Created: 2021-09-11 21:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 7753605821fa0058870ff3d0a0bd24b0 SHA-1: 8a926846b4bfd148b67aa432773fad41005f5c1c SHA-256: d1e427446a85955f318be4e0e3dbc3bfd81401f8ceadce0a48e3715b7f46fd0b
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8101

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
  • 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://teleinwestor.pl/userfiles/file/58272317159.pdf In PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/69140396276.pdfIn PDF document text
    • http://trovas.com/userimages/77081895291.pdfIn PDF document text
    • http://www.americaninvest.net/upls/files/5527819163.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/koluvo.pdfIn PDF document text
    • http://veiligheidssloten.nl/ckfinder/userfiles/files/xubanogafapuwaba.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/iu5r8arpeum6ldho9of4gsq4o0/lijikemekotofutepux.pdfIn PDF document text
    • http://wsm.hk/images/files/30732833817.pdfIn PDF document text
    • http://zensushialiso.com/uploads/files/96084317071.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/25692885806.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/zarigadisezifaxava.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/22280229496.pdfIn PDF document text
    • http://canadapremiumlubes.com/survey/userfiles/files/34951221346.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/temijumajusedetububigikar.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/brndgmq1aiq1dgjjrfotdb304q/kipusegofaxufuge.pdfIn PDF document text
    • http://gt-outillages.fr/ressource/site-image/files/vodobipagix.pdfIn PDF document text
    • http://commandhousecreations.com/uploads/files/ximomevugezezufuxuteja.pdfIn PDF document text
    • http://195exim.com/datas/filesIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=learn+python+the+hard+way+4th+editionPDF link annotation

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