Malicious PDF — malware analysis report

Static analysis result for SHA-256 59045e01305e9f96…

MALICIOUS

PDF

48.0 KB Created: 2021-09-12 10:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c69c7367f3a2a114f46be3283690cc7c SHA-1: 54374a68ef57f457580609cd9fbf13f68d7e21f7 SHA-256: 59045e01305e9f9681ea521d71bf8a55d154d3805c48218b17d3a4842aff1fb7
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript and a large number of external links, many of which point to disposable domains. This suggests the PDF is intended to redirect users to malicious sites or serve as a downloader for further malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7414

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 https://crysiq.ru/uplcv?utm_term=which+is+the+highest+rated+game+in+play+store PDF link annotation
    • https://sakura-bashi.com/uploads/files/202109050112203252.pdfIn PDF document text
    • http://zovsh.com/Uploadfiles/files/vilokuvatijaxajilapi.pdfIn PDF document text
    • https://ylwlgwadmin.ylwl.cn/upload/files/18821913717.pdfIn PDF document text
    • http://cadelupo.it/userfiles/files/60651057560.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/golurirarike.pdfIn PDF document text
    • http://thanhnhomdinhhinh.net/uploads/files/76195184899.pdfIn PDF document text
    • http://446888.top/userfiles/file/51812994393.pdfIn PDF document text
    • http://esejsc.com/upload/files/12447559807.pdfIn PDF document text
    • https://divanich96.ru/admin/ckfinder/userfiles/files/mupoxekavirisowetojiru.pdfIn PDF document text
    • https://madeinstlucia.com/userfiles/files/6898627232.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613071292fd5f---xatuwu.pdfIn PDF document text
    • https://literie-depot.fr/UserFiles/file/bovabevetinepotezonob.pdfIn PDF document text
    • http://eraldocomo.it/userfiles/files/94034769437.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/16335665742.pdfIn PDF document text
    • http://fioredda.com/userfiles/files/famadalasefab.pdfIn PDF document text
    • https://fenicia.uy/fenicia.com.uy/uploads/files/51984543578.pdfIn PDF document text
    • http://qapoll.com/2015/vat/upload/files/sijaliwitamalewin.pdfIn PDF document text
    • http://marchmontnews.com/imgs/file/goxokuri.pdfIn PDF document text
    • https://ibshospitals.com/userfiles/file/80090678038.pdfIn PDF document text
    • http://factory-01.com/js/upload/files/mirupogunenulibebal.pdfIn PDF document text
    • http://donahoelawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fawosawemudoxovaxugejib.pdfIn PDF document text
    • http://spostojow.pl/userfiles/file/90960785260.pdfIn PDF document text
    • http://ukrfirework.com/images/file/63214199894.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/40347136201.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/35161763463.pdfIn PDF document text

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