Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9293d849092388b…

MALICIOUS

PDF

39.2 KB Created: 2021-09-30 18:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 8de0e0c8b4d405ceb65c50358810e8e1 SHA-1: cef58247173f5a27615888f100c3792ec65a73dd SHA-256: e9293d849092388b459f33cdc39b618e87d41a6702c07791a37fac8191189689
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous embedded URLs, with one prominent URL pointing to 'wastran.ru', suggesting a redirection to a malicious site. The document's structure, being image-heavy with minimal text and small file size, further supports its use as a deceptive tactic to entice users to click on external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9771

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 39 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://wastran.ru/uplcv?utm_term=streaming+movies+online+free+without+downloading PDF link annotation
    • https://familienbilstrup.dk/userfiles/file/33483710603.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1613b83a4ddd86---nuxixokoxenenuziri.pdfIn PDF document text
    • https://proxus.nl/file/15298583896.pdfIn PDF document text
    • http://mkpstroitel.ru/upload/files/98141510616.pdfIn PDF document text
    • https://www.campacinter.com/image/upload/File/zebuwinu.pdfIn PDF document text
    • http://remont-m.com/userfiles/file/kojafalavobokofajixonusu.pdfIn PDF document text
    • http://lmtechsolution.com/userfiles/mebakajom.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/jt9b1uu1bv8d7i2m5e3g60b21q/pidub.pdfIn PDF document text
    • http://arrhythmiaclinic.com/userfiles/file/20210921011802.pdfIn PDF document text
    • https://gcs.kz/data/content/file/46623411348.pdfIn PDF document text
    • http://lasermedia.cn/userfiles/file/tatatolenozorexe.pdfIn PDF document text
    • http://cwesp.biz/upload/file/97349189261.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/votemisopumamubok.pdfIn PDF document text
    • http://automozg.by/upload/editor/files/90374285871.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/fibifofixotizopupakugop.pdfIn PDF document text
    • http://togul.org/sites/default/files/file/96511966973.pdfIn PDF document text
    • http://cybernet-ap.com/UserFiles/File/35880457540.pdfIn PDF document text
    • http://snnet.kr/board_pds/fckeditor/2021/09/file/bipolugupidalulogibeke.pdfIn PDF document text

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