Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97f3ee7ad96220c…

MALICIOUS

PDF

41.2 KB Created: 2021-09-09 02:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7bc7593955779ed669577a3b5fa5714e SHA-1: 6b8a856d6422cbe67bc3895e6017dfd9322c2a73 SHA-256: c97f3ee7ad96220cb05fc6c153679c694133a593fd4e3004326624580863e529
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many hosted on compromised CMS upload directories, suggesting a link farm designed to redirect users. The 'PDF_IMAGE_LURE' heuristic indicates it's likely an image-based document with a hidden clickable action, typical of phishing lures. ClamAV also detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7348

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 http://cattaneoarchitetti.it/userfiles/files/rerozixotu.pdf In PDF document text
    • https://alquimia.in/admin/fckeditor/editorfile/27010489503.pdfIn PDF document text
    • http://etoprosto.ru/ckfinder/userfiles/files/15137467909.pdfIn PDF document text
    • http://akbarestate.com/survey/userfiles/files/19104948242.pdfIn PDF document text
    • http://ylplj.com/ckfinder/userfiles/files/72572346456.pdfIn PDF document text
    • https://nhahangthanghuong.com/uploads/files/buxigubabijasesugomagage.pdfIn PDF document text
    • https://chennothinterios.com/uploads/file/xapikebujok.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/10738629245.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-2/20210902052223320319.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebd0a0e74d---61672842318.pdfIn PDF document text
    • http://hotdeals24x7.com/ci/userfiles/files/99333841895.pdfIn PDF document text
    • https://montpellier-business-plan.com/mbp/upload/images/images/upload/ckfinder/gisorujetedikigajozaviwok.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/sobewigifaluniroves.pdfIn PDF document text
    • http://duoctruongxuan.vn/userfiles/image/file/rudiwe.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612fafaae9249---62917544227.pdfIn PDF document text
    • http://studiochiodo.eu/userfiles/files/82013074319.pdfIn PDF document text
    • http://chayka-svg.ru/files/59869293246.pdfIn PDF document text
    • http://dent-pro.cz/pic/file/89948461471.pdfIn PDF document text
    • http://finpacecuador.com/userfiles/file/tirem.pdfIn PDF document text
    • http://xn--80aafbladvtgxneccoge3bt.xn--p1ai/pict/file/gowapuzujawenolof.pdfIn PDF document text
    • http://katela.net/userData/board/file/66202973653.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/161354a15cc998---4032654563.pdfIn PDF document text
    • http://catherine-massage.com/ckfinder/userfiles/files/35288145388.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/35580862703.pdfIn PDF document text
    • http://antonioruizabogados.es/userfiles/file/didagigex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=pool+instant+rewards+free+coinsPDF link annotation

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