Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3406398a8ee647…

MALICIOUS

PDF

54.6 KB Created: 2021-09-18 12:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: dd6616be7009f1f7800e8ac8593a2821 SHA-1: 8e2fcb6b6b21fede1c1f383af66f4a8b8e6418e6 SHA-256: 9d3406398a8ee6479be4e32b06aa0bee83182a984f65404c3a20e4843c2efa1d
154 Risk Score

Malware Insights

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

The PDF contains a link farm, with many URLs pointing to compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7352

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8a40b7f53---87144383212.pdf In PDF document text
    • http://hanilkwanla.com/uploads/files/84373798216.pdfIn PDF document text
    • https://newline-eg.com/userfiles/file/19633930004.pdfIn PDF document text
    • http://metabolitplus.ru/files/file/29852585592.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/voxexetilujufafelenulo.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/sowoletevuwis.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/62675298106.pdfIn PDF document text
    • http://xn--3bsx3iw22bmot.com/filespath/files/20210901151138.pdfIn PDF document text
    • http://bolt-go77.com/fckeditor/userfiles/file/13896693870.pdfIn PDF document text
    • https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/58969775728.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/6439cdacd7b1ee44ecd8dc24c4cb2a38/gupodanuliponofoletisif.pdfIn PDF document text
    • http://assisdrive.pt/userfiles/file/ladirigadafozejovowuguw.pdfIn PDF document text
    • https://epponline.com/mentorfinancial/page_images/file/22394247733.pdfIn PDF document text
    • http://apcmagon.com/userfiles/95674613030.pdfIn PDF document text
    • http://www.aamuhsv-madisonalumni.org/files/files/17617122858.pdfIn PDF document text
    • http://vamaconsulting.sk/userfiles/file/revisisujukizenoganasa.pdfIn PDF document text
    • https://viceda.com/userfiles/file/32516411320.pdfIn PDF document text
    • https://baglab.pl/galeria/file/zuwiz.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f75906e2a---32620597169.pdfIn PDF document text
    • http://medicare-darmstadt.de/bilder/UserImages/file/68622905832.pdfIn PDF document text
    • http://sicompk.com/survey/userfiles/files/50865171301.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=pmbok+guide+6th+edition+pdf+francaisPDF link annotation

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