Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ec7e55ec00a4a9…

MALICIOUS

PDF

42.2 KB Created: 2021-09-25 14:35:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8859112834cce96791dcf0bc1ed8a414 SHA-1: 2e7f2b11ea97a8476bd9741dbad95ad486efad23 SHA-256: 96ec7e55ec00a4a97f49151b772e47fb79f4755c0fdcf24d3dff288f40079065
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to potentially compromised websites or disposable hosting. The presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7814

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://medvor.ru/uplcv?utm_term=sonic+classic+collection+apk PDF link annotation
    • https://swiz.eu/files/editor/36499850667.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/boguluzewuminonu.pdfIn PDF document text
    • http://tjjjsh.com/uploads/files/20866080559.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/c11cf5b396be0d5516e3efae1ed4cb86/53921778252.pdfIn PDF document text
    • http://rigassprotes.lv/uploadz/file/93774113868.pdfIn PDF document text
    • http://villaturri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c1f46b14ee---kotiji.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/suvan.pdfIn PDF document text
    • https://alpinashop.rudy-ra.com/files/89654147336.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202109230052283166.pdfIn PDF document text
    • https://www.disbel.es/ckfinder/userfiles/files/zajatoreposu.pdfIn PDF document text
    • http://shangrilayunnan.com/ckfinder/userfiles/files/kufewotefelimi.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/87393769571.pdfIn PDF document text
    • https://behagi.eus/files/galeria/files/siwunutoso.pdfIn PDF document text
    • http://ofcourselc.com/admin/uploadsfile/xeterufazijiwaz.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/89961636875.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/vidizimakiwugafined.pdfIn PDF document text
    • http://dailygameresult.com/editor/UserFiles2/files/66719444372.pdfIn PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/e11abc944835b910ed9d72421aef750d/998301325.pdfIn PDF document text
    • http://china-engine.net/ckfinder/userfiles/files/nepafigasepanolife.pdfIn PDF document text
    • http://global-leasing-management.com/uf/file/17440190978.pdfIn PDF document text
    • http://abwsalisbury.com/uploads/files/tarud.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a5c226a1bac44a9fec8131a6d4d34a98/49345701314.pdfIn PDF document text

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