Malicious PDF — malware analysis report

Static analysis result for SHA-256 f665be976982f9fb…

MALICIOUS

PDF

50.4 KB Created: 2021-09-03 17:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f59086ea1cabf4a7a781be46b4e22de4 SHA-1: 5a8bf7a9c0d5b1a57d68bcebf82bbd63fd4e2abf SHA-256: f665be976982f9fbdc1a9c806ee72164e7a585fcd1a15b588efb5021c48457a1
154 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to websites hosted on compromised CMS platforms and disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7448

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://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/lc007718indttkns3brprff5bg/99845481292.pdf In PDF document text
    • http://cleanking.net/userData/board/file/43264847845.pdfIn PDF document text
    • http://sergeybazarov.ru/file/perexuviduropowe.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/6f5725ac7138ee1b4176b6b8c9fbda03/folaxizadifawiwotupes.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/12728615049.pdfIn PDF document text
    • https://atl-50.com/files/file/82151341789.pdfIn PDF document text
    • https://egf.tw/test2/images/file/90447465919.pdfIn PDF document text
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8b1ea30ef---52561248225.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/usfmqr59clqgvb457lucq7900o/39091896642.pdfIn PDF document text
    • http://csc010.com/userfiles/file/20210724082140_3o7ru9.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/80265718119.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/rdnp0d7u5f95etrlt4m7118v92/14286565319.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/85415247970.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b9660f98a---belubapimiweribedu.pdfIn PDF document text
    • http://farashimirooz.com/files/85790684744.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/rikodaruve.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/c5b0e82bacab838c8272c4a2fbe63f24/libijawibivise.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b10837d829---449155138.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607010b1b489e---53306281887.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/35ef7ed07c7c0a1dde6f0ab16c440e0b/wawitosiwulekemagumug.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b8a9fa603a2---saxokuvipatixiganadidelap.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/ralosonefulojilegule.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/4d1589fb00f3317125bb7003a09e15e0/88407302330.pdfIn PDF document text
    • http://ecovn.vn/uploads/news_file/85586452098.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=principles+of+directing+pdfPDF link annotation

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