Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e1cfdb2ff89a3ab…

MALICIOUS

PDF

60.9 KB Created: 2021-09-16 00:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 2221161a7d55bd70f6d1da2981803ef5 SHA-1: 922d065c7c3022490d2a13ed05b071f1fc6d34df SHA-256: 2e1cfdb2ff89a3abc37a2e16a99e757a206551ae444bd26fb79425819b0a8064
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document containing embedded JavaScript and a large number of external URIs, many of which point to PDF files. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates that the document is a link farm designed to host many links on disposable domains, likely to distribute other malicious files. The embedded JavaScript is likely used to facilitate the redirection or download of these linked files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5307

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://hitecds.com/userfiles/file/7576647124.pdf In PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/161389514c3f9d---xasuxo.pdfIn PDF document text
    • http://cityfate.com/files/files/51374936665.pdfIn PDF document text
    • https://limpiezasinasel.com/userfiles/files/fujakesepo.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/desajifuvinezonugadu.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/77343353343.pdfIn PDF document text
    • http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/97147433584.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/24751893171.pdfIn PDF document text
    • http://andersonlawdecorah.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/meforuxonubetojosoperi.pdfIn PDF document text
    • https://rheinfurth.de/userfiles/file/68785029379.pdfIn PDF document text
    • https://etcbt.com/userfiles/file/nomeriribodovejigopidadi.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/63150772231.pdfIn PDF document text
    • http://jar-ted.pl/file/tabixikedofafizuva.pdfIn PDF document text
    • https://lbjgold.in/ckfinder/userfiles/files/zijagukogemasulezodi.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/pekapodutododurudulor.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/34568382353.pdfIn PDF document text
    • https://landbar.com/app/webroot/js/ckfinder/core/connector/upload/files/22031843010.pdfIn PDF document text
    • https://f2h63c2.ip4secure.net/upload/files/tizilaxafomesoneg.pdfIn PDF document text
    • https://bunianco.com/other_files/File/57012055884.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/vipiralafirirexubo.pdfIn PDF document text
    • http://parquet-cortes.fr/data/Files/30349971165.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/zonasobibokojaxora.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/bezoleduvalel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=bollywood+movies+mkv+downloadPDF link annotation

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