Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fe930fa1df2e404…

MALICIOUS

PDF

63.8 KB Created: 2021-10-01 03:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: a8a5ba5f68bf669a7aa5c4b72de7647e SHA-1: 6c665641ac439625d474295171eca73caee6e356 SHA-256: 5fe930fa1df2e404d8c9e12b1dafe3d254edc80b0b83400500dcecb1029dab38
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to potentially compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6093

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 https://asthasupermarket.com/userfiles/file/vilopenobalajosobine.pdf In PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/aa138c41ed5c63af7eda653232d890a9/ropudetinejozarejot.pdfIn PDF document text
    • https://tutorbolivia.com/userfiles/file/76314854502.pdfIn PDF document text
    • https://cosonnguyenthanh.vn/webroot/userfiles/files/94788410484.pdfIn PDF document text
    • https://afmiletisim.com/resimler/files/niranedoxajojimoxepivag.pdfIn PDF document text
    • http://desirepara.fun4two.pl/uploads/assets/file/25510394473.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210921_1DCAED6ED56CF162.pdfIn PDF document text
    • https://ebmcordelles.progess.com/userfiles/file/93560792588.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/161461f499aedc---83271679392.pdfIn PDF document text
    • https://biomedchita.ru/imeg_master/file/3028758710.pdfIn PDF document text
    • http://b40555.handyfriendship.com/upload/files/96895520131.pdfIn PDF document text
    • https://luatsubienhoa.com/upload/ck/files/jipitovo.pdfIn PDF document text
    • https://sinarlangit1.com/contents/files/fimisebowuxivizives.pdfIn PDF document text
    • http://ing-ka.com/user_img/file/84958770177.pdfIn PDF document text
    • http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/22910836190.pdfIn PDF document text
    • http://tid.vn/upload/files/lilevikukivu.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ec5cf4c149---safokivukagabijaxuguf.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/5749389911.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/86558620926.pdfIn PDF document text
    • https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/64332507149.pdfIn PDF document text
    • https://get-insurance.in/ckfinder/userfiles/files/25617182665.pdfIn PDF document text
    • http://ain.proximeo.com/ckfinder/userfiles/files/latilidetogel.pdfIn PDF document text
    • http://jn-zhsc.com/upload/81513934129.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=nieuwe+versie+android+op+telefoon+zettenPDF link annotation

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