Malicious PDF — malware analysis report

Static analysis result for SHA-256 8896b2b4c739c22b…

MALICIOUS

PDF

72.2 KB Created: 2021-09-20 01:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 38979d49fc030289d33eeb25b9e17b5a SHA-1: 5f108dd413bc6766d83a6c825465578fc58d0294 SHA-256: 8896b2b4c739c22b4c7060e5a0a43ce27768222bd8a712330fa13ec235c4fcde
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

Heuristics 5

  • 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.
  • 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://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/kiltdbl27ok652uifea6arnnrg/satof.pdf In PDF document text
    • http://ihdbd.org/upload/files/sowuwipudazupoj.pdfIn PDF document text
    • http://elsped.hu/files/file/21078015662.pdfIn PDF document text
    • http://konikanarrowfab.com/ckfinder/userfiles/files/dopizixusofabun.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/84793403980.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133653c72828---39269662016.pdfIn PDF document text
    • http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/23827987070.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131ab6026bba---bozoxedawam.pdfIn PDF document text
    • http://erpsamik.com/ckfinder/userfiles/files/82331149147.pdfIn PDF document text
    • http://foodzipo.com/uploads/userfiles/files/79933065895.pdfIn PDF document text
    • https://mantyobras.com/userfiles/file/27310647.pdfIn PDF document text
    • http://mn-print.ru/ckfinder/userfiles/files/pawezavapugijobobumufevu.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/161476238c600c---nakatepebexa.pdfIn PDF document text
    • http://iphonedown.com/ckfinder/userfiles/files/37802324492.pdfIn PDF document text
    • http://ilovestory.com/upload/file/37809452065.pdfIn PDF document text
    • http://dorapeyzaj.com/userfiles/file/relewokotubakopiwupukevof.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/eec06d67b95729404441c0136178a95c/65637964787.pdfIn PDF document text
    • https://soenen-pneus.com/upload/file/6602006452.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/bedofuga.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ab03ccb5b---mujotunirozanuxagisarano.pdfIn PDF document text
    • http://hattingtoemrerogsnedker.dk/userfiles/file/nejazujojilelukux.pdfIn PDF document text
    • http://yingtailong.com/upload/file/210904201230581690uzeu96vn6eba.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/fizukefurotekisikiv.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/38681154211.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=mario+worker+androidPDF link annotation

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