Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc6151b620ad0c1…

MALICIOUS

PDF

232.5 KB Created: 2021-07-02 00:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7e563958d7b259eacbac80b98e5b9b34 SHA-1: cac1788198276724cfd17e07ebdbeeb858543734 SHA-256: 1dc6151b620ad0c149b03f09e9e7a06639774d7175219ffeb98c328ba05d5c7a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple links, with one pointing to a compromised WordPress upload storage, suggesting it's part of a link farm used to distribute malicious content or phish users. Although no scripts were explicitly extracted, the PDF format and the nature of the URLs suggest potential for embedded JavaScript or other exploit mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9899

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/9a8ea8eab1cda2b08ad74043ede85187/ragiwenopajo.pdf
    • https://kaptenhoki.com/contents//files/biruxilafefikusulipelakop.pdf
    • https://davaocarrental.com/images/file/todelawa.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe93c2779c---xezezinaradezoneregarin.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/gd2ra517r7j3b76i1u3npjpju1/65672149635.pdf
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/flmbft98ue28maisdtgbgnd4k1/ruxupesidososuxif.pdf
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/f277f1d7f9fe49e478f2c180c3732041/23803309138.pdf
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/3d61aeceebc2b1ee33f4a38845be72a0/78656296774.pdf
    • http://starwindows.ie/ckfinder/userfiles/files/96585354323.pdf
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/c67b96eba70f6445a97b4b182edeaa02/kasopajavu.pdf
    • http://caratow.eu/userfiles/file/20983823055.pdf
    • https://alrukn.co/userfiles/files/98765592291.pdf
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/nkg95etvrsifgrq3up17v4u571/3260799115.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=maths+sequence+and+series+class+11

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