Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a231d6dd66b9f87…

MALICIOUS

PDF

59.5 KB Created: 2021-09-21 15:54:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 2862c2f1a97a1982de3d182c897f1496 SHA-1: 708ed6327fe340172b7ae8f26702324d1d3176b6 SHA-256: 9a231d6dd66b9f875bafe6f445c8e66d195b5094bdf75aa44e1b3e8f99d19b48
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to a link farm, a common tactic for phishing or distributing further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7683

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://skpizzasubs.com/uploads/files/55512647302.pdf In PDF document text
    • https://riondene.ch/img/uploads/file/mabulenamuvomob.pdfIn PDF document text
    • https://lazeo.nl/userfiles/file/52817965733.pdfIn PDF document text
    • http://virus-safe-zone.com/ckupload/files/gilixepixuvufofebaji.pdfIn PDF document text
    • http://densayhongngoai.com/uploads/userfiles/file/41251935037.pdfIn PDF document text
    • https://wonkingchina.com/d/files/fetuvarawigovusuzelavug.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/xakamewadenabumisarav.pdfIn PDF document text
    • http://findacommodity.com/upload/file/12221743334.pdfIn PDF document text
    • https://lexconsulting.ro/webroot/files/media/1935148078.pdfIn PDF document text
    • https://sibiucuratenie.ro/fckeditor/userfiles/file/terusebavivakugupukagoxut.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/61677560906.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/2c7037f1fb9cabe027e91427aff6fac0/5329164422.pdfIn PDF document text
    • https://alarouba.com/ckfinder/userfiles/files/tomuto.pdfIn PDF document text
    • http://novichiha.ru/pic/file/damibadibamedinumewemiza.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/16134a653cbe9e---zifupagemedizu.pdfIn PDF document text
    • http://epicridesnepal.com/files/23696491443.pdfIn PDF document text
    • https://sarna-zapiekanki.pl/ckfinder/userfiles/files/tubibaso.pdfIn PDF document text
    • http://nrgmedia.hu/files/file/86961083541.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=project+free+tv+linkPDF link annotation

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