Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdbefae32de01842…

MALICIOUS

PDF

38.7 KB Created: 2021-09-28 05:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 330bbb96e7103e5bf794a873738f41d3 SHA-1: e541dfc8110b4ffcbe9c513c36d88b6b8a80269d SHA-256: bdbefae32de0184246bb296b676a2febf4eeb44d0a3c7ab88cabec7fade677f2
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns, designed to trick users into clicking a link. It contains numerous embedded URLs pointing to various disposable domains, suggesting a link farm used for distributing malicious content or redirecting to phishing sites. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://tpt.taipei/asset/uploads/files/fifarukamukosopan.pdf In PDF document text
    • http://lollanaclinic.com/image/upload/File/17959548565.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/fijevuforarutixegix.pdfIn PDF document text
    • http://canoeing.by/pics/files/23132471247.pdfIn PDF document text
    • http://santeh.md/img/files/58632832170.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16131b402c05a4---65547620348.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/27674853369.pdfIn PDF document text
    • https://eldorado777.ro/upload/editor/file/ragiwexijajefo.pdfIn PDF document text
    • https://trade.inter-ural.ru/ckfinder/userfiles/files/67297339876.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/57018973375.pdfIn PDF document text
    • https://goodluckfishing.com/ckfinder/userfiles/files/18853291780.pdfIn PDF document text
    • http://ingmarcofaedi.com/userfiles/files/8554980805.pdfIn PDF document text
    • https://hocaukhudothithanhphogiaoluu.com/asset/site/files/1977466936.pdfIn PDF document text
    • http://imdmotors.com/uploadfile/file/2021090314013934.pdfIn PDF document text
    • http://lignumweb.com/site/webroot/uploads/files/nujagadojupibozolitaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=android+clear+bluetooth+cachePDF link annotation

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