Malicious PDF — malware analysis report

Static analysis result for SHA-256 8092c9c33646aced…

MALICIOUS

PDF

48.0 KB Created: 2021-09-17 03:52:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ae970833500ec801aa827f7a5d0aae9c SHA-1: c186017b8378f904350015073437d848983cbfc6 SHA-256: 8092c9c33646aced22a66556c5127ec17271df4a40a733ef56713e36e4a0ddc9
124 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm, suggesting it's designed to redirect users to potentially harmful websites. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8987

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://bravo-hk.com/userfiles/file/gakejovewinebubum.pdf In PDF document text
    • http://zekejozsef.eu/FCKfeltoltott/file/35955805466.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/12082906760.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/ziroxage.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/82184276145.pdfIn PDF document text
    • https://galedo.cz/www/data/cms_files/files/94994238843.pdfIn PDF document text
    • http://aajude.pt/backoffice/ckfinder/userfiles/files/latejojagudunepezikipu.pdfIn PDF document text
    • https://winstar-tools.com/UserFiles/editor/file/fenep.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/52727643265.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612edb73ed566---wanaru.pdfIn PDF document text
    • http://primaria-ciocirlia.ro/media/file/63697002892.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161321318cea52---28791615064.pdfIn PDF document text
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/xamulusanuji.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/49876434716.pdfIn PDF document text
    • http://sbkf.org/files/files/95554531499.pdfIn PDF document text
    • https://penal-garazh.ru/files/47055034153.pdfIn PDF document text
    • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/kegorivalegizuwawusa.pdfIn PDF document text
    • http://likebarcode.com/image/files/20210906_223309.pdfIn PDF document text
    • https://nawaasha.org/userfiles/file/ruzoguwipepesetodugerale.pdfIn PDF document text
    • http://asia-test.informacittadino.net/media/files/18871109950.pdfIn PDF document text
    • https://riondene.ch/img/uploads/file/16290590083.pdfIn PDF document text
    • http://hitelesen.com/userfiles/file/91091616679.pdfIn PDF document text
    • https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/1576656337.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=private+album+in+redmiPDF link annotation