Malicious PDF — malware analysis report

Static analysis result for SHA-256 1602fd2049322eb5…

MALICIOUS

PDF

50.5 KB Created: 2021-06-20 23:34:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 46a3b3dbe50efa70612a78cccb16bc6e SHA-1: 3cbed114de9d7b4b4056a4498df7853cacef7745 SHA-256: 1602fd2049322eb54df2817b18a06783de50e0bf72199ce143acbf0204d630a3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and ML classifiers. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute malware or conduct phishing. The embedded URLs, such as 'https://inwebjor.ru/uplcv?utm_term=wifi+wps+unlocker+pro+apk', are likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7183

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://inwebjor.ru/uplcv?utm_term=wifi+wps+unlocker+pro+apk PDF link annotation
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/cda89f6cda9e5cd86cc3b45b77d2abcd/95442608348.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/ed4fce7e1650472474280f67456fea0c/waguvozugijino.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160984721a9405---dipomenidimitovakitebo.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/89a27084069cd3a343589fbf127fca18/2024206422.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1cdbeb2ff8---39434109184.pdfIn PDF document text
    • http://alliusie.com/userfiles/file/31614228569.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b87c439d4df---15131695762.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c194ca073a2---69982967673.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160893710a381d---wevil.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/799680517.pdfIn PDF document text
    • http://qzgj.cn/upload/file/13043042924.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/aj3p06fmu5u7uvr76mapedqqd6/56046886132.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b412a5e34---fezitiminu.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/cb70622e6d145817238de838ce46999b/mapufokivejatugufotidef.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/47014365250.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfd7389d58---pepimofamosemoziwule.pdfIn PDF document text

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