Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0cd19fbb956c7b…

MALICIOUS

PDF

54.0 KB Created: 2021-08-14 19:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bbc22e5bbafd00e8731eb105ae5d6c87 SHA-1: c7d7722d3377debb14cd54d5d22ef2ba8b7bd206 SHA-256: ce0cd19fbb956c7b902efba719aa7865df25511bcc016865665840a55a4ab08f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document identified as malicious by ML classifiers and ClamAV. It contains a link farm with numerous URLs, many hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious or phishing content. The PDF structure and embedded links are indicative of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6248

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://accronline.com/userfiles/file/zedirowarene.pdf In PDF document text
    • http://sdds.be/userfiles/file/75921168162.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160feec3713505---50253376839.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a764c56e0---51303114282.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/0g6i82e1kam87ikiiolkapf2au/28734490884.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16073c5e4d96dc---benilixison.pdfIn PDF document text
    • https://akvaguru.hu/user/file/77738421378.pdfIn PDF document text
    • http://vinhhangvien.com/upload/files/pumusonepatakotunafij.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160825583e8e1d---53359849416.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2096075da2---56100673963.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/91341113820.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/om08fj8j67nul63mcpod8978ta/vijorokas.pdfIn PDF document text
    • https://wietsevoermans.nl/ckfinder/userfiles/files/tazanurevune.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/56c06354620d9384d947b31665e3c1bc/91842970044.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/4a2ec622fbb0e96f7b26524b7ea5e041/winepewosoligixuzimu.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/3gmi27425upatdgltn3jssvfi3/zuxepovozuxoxoxave.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f45221546---mogufowoxire.pdfIn PDF document text
    • https://pet-fashion.ro/mm/file/20805600361.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/60748713165.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/ranojatefo.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/tuwaminetalifen.pdfIn PDF document text
    • http://chipublichouse.com/ckfinder/userfiles/files/92611344679.pdfIn PDF document text
    • https://xanbiente.de/userfiles/file/zipokilugifoveju.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/r8u54th2ll5prg7rbrk4jbi0t2/75706292466.pdfIn PDF document text
    • http://kemmurad.com/webroot/img/files/jiniwa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=five+feet+apart+free+audiobookPDF link annotation

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