Malicious PDF — malware analysis report

Static analysis result for SHA-256 d212e2ba5da27c99…

MALICIOUS

PDF

46.8 KB Created: 2021-09-15 18:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: de19a1acfd016dfc4b13289bfbb3273e SHA-1: 6bd9ac188e14c905549c0d4266d304b36742a059 SHA-256: d212e2ba5da27c99f7ab31c494746cc39f1359955bae33af4e8960d727136050
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier further support its malicious nature. The document body is heavily obfuscated and unreadable, but the heuristic firings indicate a link farm designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8030

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://turasmobilya.com/img/editor/image/file/9587064323.pdf In PDF document text
    • http://lso-msm.fr/userfiles/file/3371039535.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312d934d9d6---23442360425.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/53877932804.pdfIn PDF document text
    • http://uts.edu.co/portal/app/ckfinder/userfiles/files/68457862344.pdfIn PDF document text
    • http://www.louisianarebarcontractor.com/editorimg/file/wojagejevavivolopeli.pdfIn PDF document text
    • http://stlukesfp.org/ckfinder/userfiles/files/likup.pdfIn PDF document text
    • https://businesslife.com/content/files/82223995856.pdfIn PDF document text
    • https://dabanbep.tanglehadong.com/upload/files/52343976109.pdfIn PDF document text
    • http://rothemtour.com/FileData/ckfinder/files/20210901_09BDBF9C1FA2E14E.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/senakusipolapujejawizafut.pdfIn PDF document text
    • http://webs123.com/userfiles/file/mixavuxewumuzebuwude.pdfIn PDF document text
    • http://mtjjt.com/2013/upload/article/files/210909102450681515zsyya.pdfIn PDF document text
    • https://tpijobportal.com/ckeditor/ckfinder/userfiles/files/marazovixejap.pdfIn PDF document text
    • http://jj-metals.com/userfiles/file/2021090417352373499.pdfIn PDF document text
    • http://harnettcountyhba.com/userfiles/file/mexane.pdfIn PDF document text
    • https://aksusu.com/upload/files/7046116654.pdfIn PDF document text
    • http://budapesticukraszdak.hu/userfiles/files/movugoxuverodajibak.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613780e71c18f---78693441981.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/riruzizes.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/77548013740.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16133228ba47eb---98540689790.pdfIn PDF document text
    • https://angkaganjil.com/contents/files/79932852747.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=sniper+gun+game+download+offlinePDF link annotation

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