Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3d2043371d16a6…

MALICIOUS

PDF

40.0 KB Created: 2021-09-28 15:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 7face6de9a97bfc606cf9392e51aebde SHA-1: 1d2d943abdbc016e14a62030753e274d25bf2417 SHA-256: fa3d2043371d16a6294b314d29dd6451d52398a881d70cd805d6305cd8a1940a
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical for phishing or malware delivery. It contains numerous external links, including one pointing to a potentially malicious PDF hosted on sntaviator.ru. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8834

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 40 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 http://sntaviator.ru/ckfinder/userfiles/files/34105953473.pdf In PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/59aa659bbdc177e60b765f312632eb6d/bepusiriraxutedif.pdfIn PDF document text
    • http://www.radio-kum.si/data/files/11263212814.pdfIn PDF document text
    • http://garderoba.sk/images/_file/xibutuworomofivufumide.pdfIn PDF document text
    • http://thedreams.cz/files/girurodikon.pdfIn PDF document text
    • http://huynhgiabaohotel.com/uploads/FCK/file/pijewanuvesesuliriwozike.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/a33e49fcf6455194742a71623e28e340/45966439310.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/xukafete.pdfIn PDF document text
    • http://xinghui.co/upload/ckimg/files/202109110211247342.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/widegaxajaxex.pdfIn PDF document text
    • https://www.hkha.com.hk/ckfinder/userfiles/files/zexetamuvamuraxijovoki.pdfIn PDF document text
    • http://isystemlab.com/admin/ckfinder/userfiles/files/67564791607.pdfIn PDF document text
    • http://boracayg.com/FileData/ckfinder/files/20210921_C1A6B33864A72ABF.pdfIn PDF document text
    • http://alotercuman.com/ckfinder/userfiles/files/45932059823.pdfIn PDF document text
    • http://hk888.edo2008.com/com/comimg/file/20210911_034454_114.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/pafepevadopezowanakusati.pdfIn PDF document text
    • http://sbairs.com/datas/files/91699183047.pdfIn PDF document text
    • http://restauraceeverest.cz/userfiles/file/51478472115.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/dibuwukibuwawugoli.pdfIn PDF document text
    • https://datawire.gr/files/files/kadet.pdfIn PDF document text
    • https://capital-publishing.com/ckfinder/userfiles/files/60263198045.pdfIn PDF document text
    • https://mikepromedia.com/wp-In PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=west+fighter+mod+apkPDF link annotation