Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb59a0f6dc996124…

MALICIOUS

PDF

48.4 KB Created: 2021-09-13 05:10:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: a66f24163835a379c06867c3cff6311d SHA-1: 06a56199aaf50574a7d9f999f55dc7272f34b3f3 SHA-256: fb59a0f6dc996124290704b929f405225740e274c323567a164d1cc9fe05a157
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of external URIs and link farms strongly suggests an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7493

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://archism.ru/uplcv?utm_term=unicorn+dash+game+for+android PDF link annotation
    • http://artvideo74.ru/upfiles/files/42468617193.pdfIn PDF document text
    • http://cleanking.net/userData/board/file/3327085557.pdfIn PDF document text
    • http://mail-ex.net/userfiles/file/99004374903.pdfIn PDF document text
    • https://greenbins.ca/ckfinder/userfiles/files/vadaxebezusudatun.pdfIn PDF document text
    • https://sydneystudytour.com/accounting/userfiles/file/91026369827.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/161376aba5180c---kowitu.pdfIn PDF document text
    • http://candientushinko.com/images/file/novedo.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135294568bcb---puzitajilapizonusomubuza.pdfIn PDF document text
    • http://criminisiepartners.it/userfiles/files/83462657016.pdfIn PDF document text
    • https://hnhaa.com/userfiles/tnejp/files/76383173483.pdfIn PDF document text
    • http://zl369.net/userfiles/file/72517768515.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/nadivorawox.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/ligotoke.pdfIn PDF document text
    • https://remont-bez-zabot.ru/files/file/56182154635.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16135226281fcc---samexulevomevebisi.pdfIn PDF document text
    • https://simbhaolipower.com/images/file/mujulozizumeredaro.pdfIn PDF document text
    • http://jewelry-shopping-city.com/uploads/files/202109090819405980.pdfIn PDF document text
    • https://kibledergisi.net/resimler/files/bivel.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/he8m1iava6vae2kesae7con8mu/fixadubokezidaboguwin.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/11175164121.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/bixupepominiralivixezokom.pdfIn PDF document text
    • https://watosaphotography.com/app/webroot/userfiles/files/20210908_214419.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e75bea0aad---sopobi.pdfIn PDF document text
    • https://mokshadhamnepal.org/userfiles/files/mepenazisenidaf.pdfIn PDF document text
    • http://babamoleskine.com/files/file/dikigesebox.pdfIn PDF document text

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