Malicious PDF — malware analysis report

Static analysis result for SHA-256 16193e6f51b2dd7c…

MALICIOUS

PDF

58.8 KB Created: 2021-06-07 13:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5ef3cb90b8c16b8871bb4c65eb96b21a SHA-1: fafe723c15c5ba3dc6fd9481b312892360809d0c SHA-256: 16193e6f51b2dd7cd07621e4440a39bfc9cb26934edb4368a13b6b057723d58b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link farm designed to redirect users to various websites, likely for phishing or malware distribution. The presence of a 'best way to get free fortnite skins' lure suggests a social engineering tactic to entice clicks. The ML classifier and ClamAV detection strongly indicate malicious intent, and the numerous embedded URLs point to a broad distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9540

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://oniceh.ru/uplcv?utm_term=best+way+to+get+free+fortnite+skins PDF link annotation
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a6bbd1302d5---fetusisifipot.pdfIn PDF document text
    • http://yuha.be/_files/file/65759122513.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a48bf422c6---sakejiv.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/i6112d3tm1vofl1m4vgliui187/13273470453.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b6f076e9f---semeputuxa.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9326a84f48---98693909729.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/8ca6a2c6243ac5836473fcb7797297b4/49397849198.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607765db2f756---puxuxipepu.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608348616a88b---31522166884.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/17859119629.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/fiwafuwa.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/31l2os56j1hblv9cgtkc583ma6/4500088704.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6af6daba4---wuzarasilefasaxefiba.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/074c73c8c40d9c27b4674d582ff7c6e8/10742927227.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609240685514e---95708958539.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/afc0201278b95ad19024db21c4af8a13/miber.pdfIn PDF document text

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