Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec23c9390acecc02…

MALICIOUS

PDF

63.2 KB Created: 2021-09-12 05:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d0d5872d397f9862651c0cb6b93763d6 SHA-1: 595fc0dd52480527f8185f8d9648976657fe791f SHA-256: ec23c9390acecc02beecad6e691bc16c5a2716feed13eb63b08091907a5581c8
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to link farms on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is the primary mechanism for executing malicious actions within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5714

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://newsale.linyn.mobi/upload/ckeditor/pages/files/fukuxaxotimet.pdf In PDF document text
    • https://samsungklima.net/upload/ckfinder/files/58559589227.pdfIn PDF document text
    • http://tabbanbros.com/admin/fckeditor/editor/filemanager/connectors/upload/file/69224800089.pdfIn PDF document text
    • http://studiodugnani.it/userfiles/files/muridotuxemagevamijuz.pdfIn PDF document text
    • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/53919053091.pdfIn PDF document text
    • http://caffepontoni.com/uploads/file/luxegifazojifegifotora.pdfIn PDF document text
    • http://rungruangsteel.com/public/upload/userfiles/files/dabunepi.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16136e1aa3baef---9149634900.pdfIn PDF document text
    • https://sokolzgierz.pl/web/uploads/files/nosazigipem.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/salobadubuvebefobobix.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/zonosevifu.pdfIn PDF document text
    • http://constantemails.com/userfiles/file/163105888198878517943.pdfIn PDF document text
    • https://ximangcampha.vn/upload/files/1893308674.pdfIn PDF document text
    • https://hainutedecopii.eu/ckfinder/userfiles/files/18718878738.pdfIn PDF document text
    • http://xn--b1agjlwjc3g.xn--p1ai/ckfinder/userfiles/files/41823725451.pdfIn PDF document text
    • http://saringkarnwood.com/UserFiles/file/sorugetoxuvo.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/wosabexufo.pdfIn PDF document text
    • http://volvo-cars.jp/js/upload/files/85069619848.pdfIn PDF document text
    • https://cobrawire.com/userfiles/files/59015304094.pdfIn PDF document text
    • http://cheers-gifts.com/userfiles/dowivibufuvik.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/dibupoxumelomolejomum.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/lovabuz.pdfIn PDF document text
    • https://eastmanllc.com/ckfinder/userfiles/files/10465995011.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613170e297432---xavexefijox.pdfIn PDF document text
    • https://rrr71.ru/upload_picture/98233386667.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=definition+of+drama+according+to+aristotlePDF link annotation

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