Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c5fe8fe4889e00…

MALICIOUS

PDF

54.4 KB Created: 2021-05-13 18:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: da6d59cc969623e10685ea5e57019e96 SHA-1: b46cada5c70803ecde59c53a5f5acfe43af0f365 SHA-256: f0c5fe8fe4889e0017c1e566af66de120ef0904de517f5c95bdedcf7284774e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress sites, suggesting a link farm used for distributing malicious content or phishing. The ClamAV detection and ML classifier indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common malware distribution techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5674

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://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd5d1ed4fc---sezividelajikafe.pdf In PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/8b8603759ceb7bda73930e19e4916b47/fisefolukugobimalamovawu.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607f756b63541---2117841820.pdfIn PDF document text
    • https://new-baby.me/userfiles/file/66992466150.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/2ee47cc5d8b89d5f863752f527323ad1/nitabuxonukupifumegodid.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/tuvojepadakumogug.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/cbjfr1gdbqmh24dbaagfql2sb6/diwifekivurivajapufiru.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/04080050689.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b93c1c3ef8---fegokonuro.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088665e9f9bd---pugabukir.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a037409b2d---siluworofoniwusipos.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16071ce6f775bf---jogekudojozilefi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=dead+before+dawn+3d+full+moviePDF link annotation

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