Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8f2d27636469dd1…

MALICIOUS

PDF

51.8 KB Created: 2021-10-06 09:53:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0b91fb31edb33575cfbba106eba0d229 SHA-1: 830ac76c0477f6e44f482d7495ffc6afabc20014 SHA-256: f8f2d27636469dd1b407d2e5cb76ac770676e41ab0fa7ff46b3cd95845599a7c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of numerous embedded URLs, many pointing to disposable domains, strongly suggests a link farm designed to redirect users to malicious content, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://avvocato-callegaro.it/public/file/15686473795.pdf In PDF document text
    • http://xn--hy1bt45apoap01a.net/jangheung/userfiles/file/pixerav.pdfIn PDF document text
    • http://bolt-go77.com/fckeditor/userfiles/file/94698881081.pdfIn PDF document text
    • http://cesurmakina.com/userfiles/file/33789831880.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/74413993164.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/011608224395.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/tabubejuxawipusapi.pdfIn PDF document text
    • http://sandiego.songhakbbq.com/uploads/files/98928641447.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1614225759156d---88927717426.pdfIn PDF document text
    • http://asvpp.fr/pdf/vumenibisejujezililuzowo.pdfIn PDF document text
    • http://gazomotor.com/allinone/file/rasimef.pdfIn PDF document text
    • https://bestofbucerias.com/upload/file/45452784716.pdfIn PDF document text
    • https://kaimano.it/file/vogulufutapusuxofok.pdfIn PDF document text
    • https://cosmeticdermatologymiamibeach.com/uploads/data/files/libonoloxawivuzotoparovux.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/zulajutokaboxupovuno.pdfIn PDF document text
    • http://ladyvenus.it/userfiles/files/vewusidesizevufurini.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161594337c15e8---pizisevozole.pdfIn PDF document text
    • http://lica-mpt.it/userfiles/files/govideragotevuvevami.pdfIn PDF document text
    • https://idd.no/ckfinder/userfiles/files/2131252416.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/tutarobefoxinadizinunuk.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/77561553325.pdfIn PDF document text
    • http://baggiez.net/userfiles/file/19321605063.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=gcf+of+45+and+12PDF link annotation

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