Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5b28cd38584c3e…

MALICIOUS

PDF

58.2 KB Created: 2021-09-18 11:31:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 65a242f4bcb735f6a6d0b646dfc1c0a1 SHA-1: 354ca378006e3bcfc17e0626c99d8c3158de8e1a SHA-256: 8a5b28cd38584c3eb471d8592aa202c8a0772fa20ccee5345f971f929536c7b8
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file containing embedded JavaScript, which is a common technique for executing malicious code. The presence of numerous external links, many pointing to disposable domains, indicates a phishing or redirection attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6517

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://hypotekaprezamestnancov.sk/res/file/jesamikup.pdf In PDF document text
    • http://dezis.ru/uploads/files/pexefiludabemozujabe.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/4ths5vrn3h754pmdtean71659j/xotezixin.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/32417449966.pdfIn PDF document text
    • http://ledlight-lamp.com/mingyi/images/userfiles/file/luwurewavizabajakugita.pdfIn PDF document text
    • https://triosms.com/userfiles/file/topupepatulutog.pdfIn PDF document text
    • http://dasbluemchen.com/mupix.pdfIn PDF document text
    • http://lynhuagiasi.com/Images_upload/files/47086397582.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb95ee3ff8---63863193872.pdfIn PDF document text
    • https://thokhoavietnam.com/upload/files/47113781371.pdfIn PDF document text
    • https://glamweddingdesign.com/userfiles/file/toxekufuxeridij.pdfIn PDF document text
    • http://happy-land.hu/editor_up/lomugusovopipovubob.pdfIn PDF document text
    • http://ikra-ekb.ru/files/fckeditor/file/83306357892.pdfIn PDF document text
    • https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/sogewavomujogiranobi.pdfIn PDF document text
    • http://raczcsalad.hu/files/36311315073.pdfIn PDF document text
    • https://inprovitecuador.com/ckfinder/userfiles/files/nefuganerepusawi.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/55709167107.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/roxewitubelowawebekom.pdfIn PDF document text
    • https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/kinubebo.pdfIn PDF document text
    • https://tomorrowhubs.com/upload/users/files/silizusexukiwaz.pdfIn PDF document text
    • https://tp-pos.com/uploads/image/files/dudoni.pdfIn PDF document text
    • http://www.contal-farmer.com/uploads/files/70211713390.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/fopewipupuluxojoni.pdfIn PDF document text
    • https://thehideawayresortpattaya.com/userfiles/files/barivikibizod.pdfIn PDF document text
    • http://kocavietnam.coIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=godzilla+game+for+androidPDF link annotation

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