Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8bc698582019c1…

MALICIOUS

PDF

165.1 KB Created: 2021-09-04 05:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 33d03e21c9eba88e2ceacf5992290ab6 SHA-1: c4c2703c5e95b22dc61ca55fd465a4740c64ac57 SHA-256: ab8bc698582019c12b75faa58c29502efdb664c92131df84047d7d5612b5db84
154 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 numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the PDF structure point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9524

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://ketchas.ru/uplcv?utm_term=xerox+workcentre+7845+user+manual PDF link annotation
    • https://alshuka.ps/ckfinder/userfiles/files/sonanarizitusedukaja.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16084372730e26---vogiri.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/xupimuboluperumok.pdfIn PDF document text
    • http://thejosephinebryantfamily.com/clients/48776/File/gotet.pdfIn PDF document text
    • https://lapalettedesarts.fr/gestion/file/gozixuvumakosozigorapuwe.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/d6b0b3eaabf16c0ed42dc1970f8198d8/58666732365.pdfIn PDF document text
    • http://ketoanaca.com/uploads/image/files/61209545670.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6a7829822---48509539689.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/renewi.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942ed520462---fopotigujazuxi.pdfIn PDF document text
    • http://honda-vo.com/upload/file/99607622259.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/4dca432884f8a3b73063b8def50f9d8f/71334002466.pdfIn PDF document text
    • http://mackielaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/8059047756.pdfIn PDF document text
    • http://mitcostruttori.it/userfiles/files/74210675826.pdfIn PDF document text
    • https://360mart.net/uploads/files/kekizimuj.pdfIn PDF document text