Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db7bba30c9155a5…

MALICIOUS

PDF

43.6 KB Created: 2021-09-18 04:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6fd62759bf5f60cbb93031f5c23e7540 SHA-1: 8b8237fbe75bb6d6c5bfa7019392dfa1f19826ea SHA-256: 7db7bba30c9155a54f3cad70ca8b1db1b081c36a959820428e0c40ce9c920926
132 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and a machine learning classifier. It contains embedded JavaScript, which is often used to redirect users to malicious sites. The PDF also functions as a link farm, with numerous external URIs pointing to potentially compromised or disposable domains, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7222

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://www.jacenter.org/js/ckfinder/userfiles/files/soxidixogazop.pdf In PDF document text
    • http://matsusushionline.com/uploads/files/25087281319.pdfIn PDF document text
    • https://mcq-exambd.bdbabymart.com/app/webroot/ckfinder/userfiles/files/ratewujulunef.pdfIn PDF document text
    • http://rassadaspb.com/new/files/file/94143372839.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/16089234489.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/rifosivuxajorinefurinefo.pdfIn PDF document text
    • https://inprovituruguay.com/ckfinder/userfiles/files/sotikafupuz.pdfIn PDF document text
    • https://bazab.ru/ckfinder/userfiles/files/27049190907.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b934464830---64547767596.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/36623354804.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16140628e4550d---96604477624.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/godifabiw.pdfIn PDF document text
    • http://geometrabottero.it/userfiles/files/15071814165.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/mowurejalazexibowezaguvuf.pdfIn PDF document text
    • https://limblength-sldf.com/userfiles/file/sareramutaralu.pdfIn PDF document text
    • http://cafegreenwichvillage.com/uploads/files/parobi.pdfIn PDF document text
    • https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/72957135297.pdfIn PDF document text
    • http://guerrazzi.info/userfiles/files/88428435778.pdfIn PDF document text
    • http://gruppocinofilomarsalese.com/userfiles/files/boxagute.pdfIn PDF document text
    • http://tumwebthailand.com/ckfinder/userfiles/files/9416272473.pdfIn PDF document text
    • http://yildizteknikelektrik.net/resimler/files/tibafubivij.pdfIn PDF document text
    • http://fanti-fitness.pl/uploads/assets/file/19110567786.pdfIn PDF document text
    • https://polenhosting.com/calisma2/files/uploads/kunoxa.pdfIn PDF document text
    • http://taxplus.in/images/contentimages/files/watumilogulelitu.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/76393942700.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=my+hero+academia+season+4+watch+freePDF link annotation

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