Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a147f355b8f775b…

MALICIOUS

PDF

62.3 KB Created: 2021-07-24 20:52:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b64aa8afdea2b358898417c0fda226c1 SHA-1: becae914dd32b6e7678a5c63ecce146a90495238 SHA-256: 0a147f355b8f775b60729ba4661a74232bb37a18d4f7c0aaea9420fdef30ba86
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, many of which point to compromised CMS upload directories. The ML classifier also flagged this PDF as malicious. The presence of a link farm suggests an attempt to direct users to potentially malicious websites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9884

Heuristics 4

  • 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 https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/4c6a23f563c47c6f6392d441c010692b/11804805650.pdf In PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608720d78f381---68195424072.pdfIn PDF document text
    • http://soupworld.de/upload/file/sujutiregudajufijulebi.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/vinirigakofadezizobadu.pdfIn PDF document text
    • https://thenavyaindustries.com/ckfinder/userfiles/files/nefedibujosivokugedeseja.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093e5a536767---xozaka.pdfIn PDF document text
    • https://next-engineering.com/userfiles/files/66550333302.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608530fc7fcf8---govutipenare.pdfIn PDF document text
    • http://orthodoxvaidikasanghom.org/userfiles/file/87914921711.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/9d58dd4bd13f0e1def021300b4c4b3c7/kideladazof.pdfIn PDF document text
    • https://toananhmedical.com/uploads/files/fosezobovelavewomiwasin.pdfIn PDF document text
    • https://delphin-restaurant.com/ckfinder/upload/files/gikogabewarunutep.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/32370786987.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/sefeki.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/folike.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae70d5db18---54039206035.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9199531f5d---45664282415.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/uq9ndk57g8c46q4702ahmolnt2/naxuduse.pdfIn PDF document text
    • https://orrizon.ru/images/file/99562296299.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/3e8eetg4q33tbieol756e18l3k/jopusadukukunit.pdfIn PDF document text
    • https://wittnebel.dk/file/91597163709.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+hack+coc+accountsPDF link annotation

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