Malicious PDF — malware analysis report

Static analysis result for SHA-256 8490e84187810e10…

MALICIOUS

PDF

125.0 KB Created: 2021-07-14 01:19:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 599064a549fb2061a7c3229dbaca3c80 SHA-1: 8d790a897a3686f4106920c589546d945ae2c8c9 SHA-256: 8490e84187810e102bd7dce7687cb88c76f33e0bd8d35146184df9abf93b3044
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. While no scripts were extracted, the presence of numerous links to PDFs on potentially compromised domains indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4607

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.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/67075f252cc5c36554f3b4dc68b825d2/zomazenitirixuzalitog.pdf In PDF document text
    • http://cp-tournament.org/ckfinder/userfiles/files/22095692968.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/aa944d2b39b6f8044158c5fb1b04b49d/gokeziv.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7586299da---zizabuzepiwut.pdfIn PDF document text
    • http://animalscipublisher.com/files/upfiles/file/moziwiragovegerokoti.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/xamadufelakowa.pdfIn PDF document text
    • http://tillmanfamilyreunion.com/clients/b/b7/b7385abc5988d1ee605fea7695e3d00e/File/78564312419.pdfIn PDF document text
    • https://istanajp2.com/contents//files/sakizelok.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/30458633649.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6528c643c---35921680683.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/ziwewetijimaso.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/rtj8qs3k1ifm14uo7nfuqncd9r/kubetajalusawufoduziz.pdfIn PDF document text
    • https://yssnewlessons.org/UserFilesTwo/file/72311124038.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/28781020972.pdfIn PDF document text
    • https://kcharp.com/ckfinder/userfiles/files/29014062610.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/laduxubepewiwojupe.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/fuzujanamuvudukibifuzitu.pdfIn PDF document text
    • http://ilkyoukais.com/Images/Media/files/28084022179.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/d17454f3f146b20ce6dc9ee3ad861495/gilemuwadalunaru.pdfIn PDF document text
    • http://csptech.net/admin/userfiles/file/xakojatiposodifibip.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16087db0419ec8---27227141168.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec5dbd686f---76094931499.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/javasozojelevagozoxekok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=tom+and+jerry+story+in+englishPDF link annotation

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