Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f171ee7432706b5…

MALICIOUS

PDF

65.1 KB Created: 2021-09-02 00:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 908e92c10d93f2016f3ef3bd532dea8d SHA-1: 4edd244e8fc698c98083d4eab9f205bdc8601bea SHA-256: 2f171ee7432706b5d1787a1c97b9575ec7ca98de159d7794b566151340af7268
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The primary purpose seems to be directing users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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://philabc.ru/uplcv?utm_term=moscowin+kaveri+movie+download+tamilrockers PDF link annotation
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd615bd06b---78443198289.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/20642462254.pdfIn PDF document text
    • http://georgefamilyreunion.org/clients/86186/File/zeresanogakasorikodaj.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/b0f73063d3fa81a4b4f6d5e2541e86aa/fopepewusesix.pdfIn PDF document text
    • http://teplorium.su/userfiles/file/44219958617.pdfIn PDF document text
    • http://casadiriposomarsala.it/userfiles/files/xisabizusavamimagotamun.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/hg4bfm2h7os2ahmujif6ss2l2i/kegip.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/66984321128.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d9e5e9486---72912234938.pdfIn PDF document text
    • https://noihoithanhtuan.com/media/ftp/file/25285165653.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/pogolupiwa.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16088561eaf777---wivaku.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1610dc29831bee---11795406494.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/fefowopoxororotuzefomera.pdfIn PDF document text
    • https://maisonforville.be/documents/file/37834507149.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/79081148713.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160947a612cc2d---25321125210.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/8vc3vbtf9snpl0kv3eoqrrfv12/99628889806.pdfIn PDF document text
    • http://richfield1960.com/clients/865265/File/49307556189.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a36adcd4871---35633878935.pdfIn PDF document text

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