Malicious PDF — malware analysis report

Static analysis result for SHA-256 a665576816496748…

MALICIOUS

PDF

43.8 KB Created: 2021-09-16 14:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 912bb229f475fbc93ebb6807284679ff SHA-1: 43d4acc7a5f3567c356d64576de748c8948ecbf5 SHA-256: a6655768164967483907826e851be0de61b9f84f6d152d5d9c411ffe328440f0
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to obscure the final destination. The ClamAV detection and ML classifier further support its malicious nature, likely leading to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5141

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 2 text block(s), carries a click-outward action, and is only 43 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://ketchas.ru/uplcv?utm_term=what+does+nfc PDF link annotation
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/eqhd3i6ukbobhaahsrig9lssu4/dagemilarafavunifova.pdfIn PDF document text
    • http://dtpokebar.com/uploads/files/48552575424.pdfIn PDF document text
    • https://coffotea.com/uploads/files/202109040836071024.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/7821e5cd6816f0eb58716f09e8f2c6da/kuganefixera.pdfIn PDF document text
    • https://aristi-trap.com/upload/users/files/58252276356.pdfIn PDF document text
    • http://turnyras.lt/Files/file/futujagulepinuzapan.pdfIn PDF document text
    • http://hdurmuslar.com/images_upload/files/terijepakofajib.pdfIn PDF document text
    • https://stealthwindow.tw/uploads/files/202109131400081183.pdfIn PDF document text
    • http://ytovietnam.net/ckfinder/userfiles/files/zipudemu.pdfIn PDF document text
    • https://ip-kamera-rendszer.hu/ckfinder/userfiles/files/26652469873.pdfIn PDF document text
    • https://terracell.info/images/file/bafekad.pdfIn PDF document text
    • http://baove24h.org/upload/files/mifunisevowipifigibuvabuz.pdfIn PDF document text
    • https://benhgout.net/uploads/Files/file/32663569720.pdfIn PDF document text
    • http://www.prakashirrigation.com/uploads/fck/files/37062636828.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/limidebufiwex.pdfIn PDF document text
    • https://costarica4d.com/contents/files/zusikujefadilefefejipubo.pdfIn PDF document text
    • https://onutglen.com/caningest/images/file/jazerimipuzari.pdfIn PDF document text
    • http://theexplorerthai.com/userfiles/files/81225492649.pdfIn PDF document text
    • http://pi-consulting.ch/download/39680186316.pdfIn PDF document text
    • http://zzquansu.cn/d/files/pemuxemirofelogete.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/wewitibamijukofololubo.pdfIn PDF document text
    • https://cncostruzioni.com/userfiles/file/95526948103.pdfIn PDF document text
    • https://etravelbox.com/scgtest/team-explore/uploads/files/25838472462.pdfIn PDF document text
    • https://mariapolis.net/ckfinder/userfiles/files/46880209572.pdfIn PDF document text
    • https://gogreenonline.net/userfiles/image/fckeditor/file/sivomajomuw.pdfIn PDF document text
    • http://olymp-kiev.com/temp/fckeditor/file/dufunatenuxutizubizaj.pdfIn PDF document text
    • https://roshnaai.com/ckfinder/userfiles/files/63160195088.pdfIn PDF document text

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