Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef573be5c847979…

MALICIOUS

PDF

62.0 KB Created: 2021-09-18 14:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 550008c1cc010b369c542407b9e0cef7 SHA-1: 8596655e1f57adcdb7cb221f847035e17c14e60e SHA-256: 2ef573be5c847979e3fd0d4777627d96445cf4122e1ca07c949e49aa3c6e3ee0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the numerous external URLs suggest a phishing or spam campaign aimed at driving traffic to potentially malicious sites. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4891

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://catamma.ru/uplcv?utm_term=charlie%27s+angels+2019+gomovies PDF link annotation
    • http://tg-focus.ru/userfiles/files/rijajag.pdfIn PDF document text
    • https://pvcmikser.com/upload/files/46820069.pdfIn PDF document text
    • http://studiotecnicomartani.eu/userfiles/files/tofalobatimuxizi.pdfIn PDF document text
    • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/dawiwibeserexe.pdfIn PDF document text
    • http://net-marketing.hu/images/files/52082132066.pdfIn PDF document text
    • http://malifer.hu/upload/file/lotapuvubibo.pdfIn PDF document text
    • http://picassogift.com/Uploadfiles/files/nijulogupaxixenevudu.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/84597630793.pdfIn PDF document text
    • https://saunadlaciebie.pl/userfiles/file/ravanosotakabevaj.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613991fdee1d2---getivudov.pdfIn PDF document text
    • https://www.agencesramos.com/ckfinder/userfiles/files/56075234349.pdfIn PDF document text
    • https://jpjplumbingandheating.com/FCKeditor/file/repagelikadisomusu.pdfIn PDF document text
    • http://pop-around.com/file_media/file_image/file/jijexelef.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/tobiv.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/tavurep.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139005930f5f---49767574863.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/rirefofe.pdfIn PDF document text
    • http://ilkemymm.com/image/files/zewadidoda.pdfIn PDF document text
    • http://volvo-cars.jp/js/upload/files/julofu.pdfIn PDF document text
    • http://opuspointpartner.com/ckfinder/userfiles/files/pexodikujegixoxafunemega.pdfIn PDF document text
    • http://jts-electrical.co.uk/ckfinder/userfiles/files/80088585718.pdfIn PDF document text
    • http://consorzio-csa.it/userfiles/files/82383479662.pdfIn PDF document text
    • http://kaymccarthy.com/immagini/file/jekuzikotujubuse.pdfIn PDF document text
    • http://webinaris.net/ckfinder/userfiles/publics/files/mesemepi.pdfIn PDF document text

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