Malicious PDF — malware analysis report

Static analysis result for SHA-256 18dfbb14fb188908…

MALICIOUS

PDF

91.8 KB Created: 2021-07-27 05:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9eb03a6b101fa76ec2791c1c3ddbb652 SHA-1: c33d219a0577cd34fc9b9b4743c28b7bc4c791fb SHA-256: 18dfbb14fb188908a4cd4fc641a3b3f995aa631825e491518c9dced9e7d1141e
174 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. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm. The presence of a raw IP address in one of the URIs further indicates a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9565

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7c042ac7e---gekip.pdf In PDF document text
    • http://maynenkhipuma.vn/quangbasanpham/app/webroot/upload/image/files/22035655922.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/4acc041fd524d8b40bcb09293975cfbf/bemujobavafidimonuku.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/l663e6csmcko5p6ebp7skfle2n/45997191415.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccf302615e---71744222286.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4baafe399b---vuritapakaj.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/tsb3bd5ubtbjl3v8233db0gi77/2018576350.pdfIn PDF document text
    • http://hugslock.com/app/webroot/img/files/befovufimarit.pdfIn PDF document text
    • https://www.nevjegykiraly.hu/userfiles/files/delegakax.pdfIn PDF document text
    • http://dga.gr/ILC/img/file/xomaganugefenigizo.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/5277514790.pdfIn PDF document text
    • http://world-green-hope.com/uploads/files/1051996430.pdfIn PDF document text
    • http://dlevitin.ru/fck_editor_files/files/60370177601.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd89f807c2---wizox.pdfPDF link annotation
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wifoponejat.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/98618752881.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/cjk20bd29fua7pdlt1f05f68h3/vifajefagobogu.pdfIn PDF document text
    • https://zulapin.com/calisma2/files/uploads/dowoninedukamikuwital.pdfIn PDF document text
    • https://aedwea.com/upload/foto/59188412172.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a025978906d---lowafefutefewejud.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/zikatolajaralumup.pdfIn PDF document text
    • https://giorgiosantinelli.it/file/30584026355.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+play+halo+ce+on+pcPDF link annotation

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