Malicious PDF — malware analysis report

Static analysis result for SHA-256 7706616e2b720736…

MALICIOUS

PDF

47.4 KB Created: 2021-09-14 13:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8a827a896c8e48440d1e05820ee67d7a SHA-1: 68518896801f4735d94ebf540b1e8303a69ca72d SHA-256: 7706616e2b720736d352d4f02c69a818c447088ecfe60b2e0b4db3b02d69fd85
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. It contains numerous embedded URLs, including one pointing to 'pixomot.ru', suggesting a phishing or malware distribution attempt. The PDF structure and embedded links indicate it is likely used as a lure to redirect users to malicious sites, potentially as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6989

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://pixomot.ru/uplcv?utm_term=top+10+android+apps+2020 PDF link annotation
    • https://www.gpaci.org.br/cms/ckfinder/userfiles/files/bisef.pdfIn PDF document text
    • http://controlsystemco.com/cache/fck_files/file/57119449266.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/xakovem.pdfIn PDF document text
    • https://webdatedepot.com/userfiles/file/8675310746.pdfIn PDF document text
    • http://amicalelaique-guyancourt.fr/ckfinder/userfiles/files/57675732916.pdfIn PDF document text
    • http://the100voicesofgospel.ch/fichiers/newsletter/file/bugajomu.pdfIn PDF document text
    • http://car-zone.sk/data/data/file/48540433726.pdfIn PDF document text
    • http://max-metal.pl/gfx/file/jiluliburo.pdfIn PDF document text
    • https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/68210066004.pdfIn PDF document text
    • http://elitsatodorova.com/uploadfiles/file/tizapisonopixisup.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/22771161492.pdfIn PDF document text
    • http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/kadexo.pdfIn PDF document text
    • http://ukrfirework.com/images/file/puzuribe.pdfIn PDF document text
    • http://www.trisad.kz/ckfinder/userfiles/files/rudajoz.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/c46dfb9345eed5034721b008fdfda41b/lobosifusiwexofegelajofum.pdfIn PDF document text
    • http://www.diplomat2014.ru/ckfinder/userfiles/files/ledizedo.pdfIn PDF document text

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