Malicious PDF — malware analysis report

Static analysis result for SHA-256 822f02e7a508146a…

MALICIOUS

PDF

38.9 KB Created: 2021-09-25 13:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c3bb91144e957c9489ff4628ffb4d69b SHA-1: 0c0df1d2edb49c0f1003ed5072d1711971788340 SHA-256: 822f02e7a508146a6a3e2ccf9653958025301df6646fa0958dedfa50c03567fa
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot used to hide clickable links. Multiple external URLs were extracted, suggesting a redirection to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8579

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
  • 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 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://pixomot.ru/uplcv?utm_term=video+buddy+app+movie+download
    • http://dorrstrechy.cz/UserFiles/File/muzijobunudozululezaxapo.pdf
    • http://bodybybodyology.com/ckfinder/userfiles/files/77653190636.pdf
    • http://denda.co.kr/ckfinder/userfiles/files/retopewosewemuxo.pdf
    • https://parklanehotel.asia/userfiles/file/70021743919.pdf
    • http://studiobaldizzone.com/userfiles/files/48971756615.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d0eafd118f---wasow.pdf
    • http://szentistvanpatika.hu/upload/file/50414273882.pdf
    • http://dsfly.com/uploads/files/28026288547.pdf
    • https://mtydizayn.com/userfiles/file/naxav.pdf
    • http://eiak.org/upload/editor/files/mokopupotojovezipikig.pdf
    • https://asthasupermarket.com/userfiles/file/lajanebedokudido.pdf
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614828f20843a---lulinapelobana.pdf
    • http://szyoujin.com/UploadFile/file/20210907060642688.pdf
    • http://gaytonfa.com/upload/files/kekekemisifawikisixi.pdf
    • https://tumujerrusa.com/userfiles/dawalogiwefeberexap.pdf
    • https://www.terraton.com.my/ckfinder/userfiles/files/86955648006.pdf
    • https://darshanam.com/ckfinder/userfiles/files/5955674557.pdf

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