Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7b5cf8ffeeed7b…

MALICIOUS

PDF

64.0 KB Created: 2021-09-11 21:20:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e7a67849c29a301409b94b5546522bcb SHA-1: 35a2df9f5f3e489bee515f9eeb060cd952ae93ed SHA-256: cd7b5cf8ffeeed7b079cbb9db710ed7e7f126d1192727bc4ec3b3ade1dc56cdc
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as a phishing trojan and a machine learning classifier also indicated maliciousness. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure indicate an attempt to distribute further malicious payloads or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5089

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lodoshosting.com/calisma2/files/uploads/sutujogaguvuvasevumufuxo.pdf In PDF document text
    • http://apvn.info/userfiles/file/38146647568.pdfIn PDF document text
    • http://runnersavezzano.it/public/userfiles/file/sigetowunotepul.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2aca3deec---jawazarakofosumatapovi.pdfIn PDF document text
    • http://parateam.cz/file/jowozilog.pdfIn PDF document text
    • http://idominjazz.com/fckeditor/userfiles/image/sanaduxowumijebixof.pdfIn PDF document text
    • http://dworbieland.pl/userfiles/file/tixidawodidurejazigi.pdfIn PDF document text
    • http://www.eau-msu.ru/ckfinder/userfiles/files/gewijolakafabalizewoza.pdfIn PDF document text
    • http://tbeaindia.com/userfiles/file/jilebum.pdfIn PDF document text
    • http://speaklifeiamgreatness.com/files/files/wegukogulibes.pdfIn PDF document text
    • http://lasermedia.cn/userfiles/file/25195707482.pdfIn PDF document text
    • https://insinkerator.us/images/uploaded/file/zabufon.pdfIn PDF document text
    • https://ietc-oman.com/userfiles/files/fazexedowonulogolo.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/55062183155.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/zetirotupozozomokoz.pdfIn PDF document text
    • https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/64747220846.pdfIn PDF document text
    • https://rosebankprimary.co.za/inc/ckfinder/userfiles/files/sijukutitejejosafi.pdfIn PDF document text
    • http://ottuk-e.org/userData/board/file/55194954993.pdfIn PDF document text
    • http://thietkewebsite.btccorp.vn/uploads/files/wopesukuvobubitopawasup.pdfIn PDF document text
    • https://securitydm.com/slicice/file/25803665216.pdfIn PDF document text
    • http://badgerhillfarm.uk/jisilevisugef.pdfIn PDF document text
    • http://ccshecea.org/upload/files/17243324036.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/rigejufow.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=hillbilly+elegy+pdfPDF link annotation

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