Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf0a95a12078e5d…

MALICIOUS

PDF

52.0 KB Created: 2021-09-17 13:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: df4c19dd4afd8233a795bd1b1f7d09a1 SHA-1: 866b56c0164a060c39e9ab6301ad8d272d4727d5 SHA-256: ebf0a95a12078e5dff626ff4e50597ce6bf2e1352f910d697bba2a9bbf439d6f
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are structured as link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7531

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://krisoc.ru/uplcv?utm_term=mobdro+playlist+ios PDF link annotation
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/52204967916.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16143c99f2b1a6---binusiverenixux.pdfIn PDF document text
    • https://n-v-v.dk/userfiles/file/nofanefiraxozoti.pdfIn PDF document text
    • http://danguykhoidoanhnghiephp.vn/Upload/files/90120127174.pdfIn PDF document text
    • https://cargoservice.pl/cargoservice/userfiles/file/98861266895.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/fugepa.pdfIn PDF document text
    • https://textosl.com/upload/editor/file/61003666156.pdfIn PDF document text
    • https://aashianarealty.com/file/rojevevivotafabaru.pdfIn PDF document text
    • https://melz-feu.ru/upload/53628719114.pdfIn PDF document text
    • http://www.introspekta.si/ckfinder/ckeditor_uploaded_files/files/95337410469.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/709823768.pdfIn PDF document text
    • https://dennismaloney.ca/upload/editor/file/6732172368.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pevukolazitigef.pdfIn PDF document text
    • https://netcsemege.hu/ckfinder/userfiles/files/sasaxasusujilom.pdfIn PDF document text
    • http://mh-gartengestaltung.de/userfiles/file/firoxagug.pdfIn PDF document text
    • http://drzwiukryte.pl/userfiles/file/loredopo.pdfIn PDF document text
    • http://oumkua.com/userfiles/file/jekejosewiforuge.pdfIn PDF document text
    • https://zerling.eu/nico/images/files/27456351247.pdfIn PDF document text
    • https://quangcaowebsite.xemlaco.com/uploads/files/81904874546.pdfIn PDF document text
    • http://140.121.161.111/ckfinder/userfiles/files/wapikuj.pdfPDF link annotation
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/bd3e0893d05610933529dd0ff5fc6ee5/44928139815.pdfIn PDF document text
    • http://train-in-japan.com/images/blog/file/vezuzimakekus.pdfIn PDF document text
    • https://adikketiga.com/contents/files/92373141038.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/wovuwuwovotopibitibalomaj.pdfIn PDF document text

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