Malicious PDF — malware analysis report

Static analysis result for SHA-256 116d5e04afb8738a…

MALICIOUS

PDF

120.7 KB Created: 2021-07-19 01:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 0392346f3b05bd0e412d651335ce0dde SHA-1: 8552dd05eadc1f1f2ad6589216c8077121311a64 SHA-256: 116d5e04afb8738ab4db5f58cf79852360dfdc85052921eb538043bb0c5bc47f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV, specifically as Pdf.Phishing.Trojan. The heuristics indicate it functions as a link farm, directing users to download other PDF files from compromised CMS uploads and disposable hosting. The embedded URLs suggest a phishing or malware distribution scheme, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4594

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 https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/g70rtotrbpims98p2mpf69vu4u/51293636725.pdf In PDF document text
    • http://ghrnightinwhite.com/clients/7/72/721f26fb9237119891afe8d29dbdfc29/File/suruvinusu.pdfIn PDF document text
    • http://3gr-group.com/ci/userfiles/files/vepob.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/sjnseld87i26j2sek5mrdn2u90/83638025282.pdfIn PDF document text
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/nj0tcbluofmplpa0bom313cbn2/matuziwubuduvapuvopabanad.pdfIn PDF document text
    • http://nwatchonline.org/userfiles/file/65033447844.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/0c5d5dc92e1d503dea57ef69c9f1aaf7/tiwosavofir.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607aa4e998d88---fumesumope.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/86a79818abe11ebfca94018ed55359a1/12889112170.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/bubidosuxegosudalalozas.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/sodoj.pdfIn PDF document text
    • http://banning64reunion.com/clients/a/a7/a71e9339640f4be667ed55590a288245/File/xusit.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/b7f19623118187586eee1b3f9374d2e1/rijetuvedivepujexujo.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a0af1c29a---venunaruron.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7d82111fe---foton.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160c1c14e5768f---dofizakesujerofalasin.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd4193112d---rukuvapixilorodiloze.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160907ead62852---pigenafetuxunasok.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7ec3475ad---memadotamije.pdfIn PDF document text
    • http://hugslock.com/app/webroot/img/files/65973521198.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a076d377d5a---nixamuwitozexefufogi.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/wadewupifuzoduw.pdfIn PDF document text
    • http://odessahighschool1970.com/clients/7/70/70263b1be1b93b62200e198143f59f20/File/vetatamulezabuve.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/33240642892.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=the+48+laws+of+power+pdf+book+downloadPDF link annotation

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