Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a6aaae1f5e21e1d…

MALICIOUS

PDF

48.0 KB Created: 2021-10-03 11:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 68ffd24ed770b900f932457eda04c138 SHA-1: af65b965866c11eee65ea8da75e3a1afd565a4d5 SHA-256: 4a6aaae1f5e21e1d8e5335b679f1c6ccada62d9703d695cdd6a7cccccd36af13
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to external sites, many of which are structured as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6441

Heuristics 4

  • 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.
  • 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://crewmak.ru/uplcv?utm_term=victorious+hottest+survival+full+episode PDF link annotation
    • https://buddhaart.in/userfiles/file/21862336007.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210928_454F4667DC7D3A9F.pdfIn PDF document text
    • http://vimar.ua/userfiles/files/37832516039.pdfIn PDF document text
    • http://yakutiaprime.ru/SITE/files/editor/file/73087790394.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/kuwirurutewufexenuw.pdfIn PDF document text
    • http://www.logomarcanet.com/userfiles/file/68783527516.pdfIn PDF document text
    • https://electrodomesticaruano.com/images/ckfinder/files/lamenejegunuvosafaguka.pdfIn PDF document text
    • http://rosniyom.com/userfiles/files/vimizonasupewiw.pdfIn PDF document text
    • http://fine-trading-knotwork.com/uploads/media/34926213616.pdfIn PDF document text
    • http://aptekadc.pl/userfiles/userfile/17908883452.pdfIn PDF document text
    • http://halongbaycruises.org/upload/files/48240129348.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/29018591477.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/053e9366bba252e960023d323a6b811a/46802295096.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/202191011191012.pdfIn PDF document text
    • http://c-amc.com/upload/files/74001244325.pdfIn PDF document text
    • http://xn--2-140-swe8h.xn--p1ai/files/lewus.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/wewevebo.pdfIn PDF document text
    • http://proreferee.ru/uploads/ckfinder/files/94310250489.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fed1814979---kagepakubofisivibuvaj.pdfIn PDF document text
    • https://combrooncom.com/contents/files/mosopudonubikujige.pdfIn PDF document text
    • http://sindikat777.ru/ckeditor/ckfinder/core/connector/php/uploads/files/38543376698.pdfIn PDF document text
    • http://dobraukraina.org/sites/all/sites/dobraukraina.org/files/67709565953.pdfIn PDF document text
    • http://sdv.sk/userfiles/articles/file/bufesimonibexumis.pdfIn PDF document text
    • http://mexvp.com/ckfinder/userfiles/files/tovipoputow.pdfIn PDF document text