Malicious PDF — malware analysis report

Static analysis result for SHA-256 a332092610fe7be3…

MALICIOUS

PDF

186.0 KB Created: 2021-07-02 01:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0e8dc516fd623b9ae5dac48aea6987e8 SHA-1: f91f15e6241c3b95ebb2eb1ae2c29bb29df26f1e SHA-256: a332092610fe7be34501aac2955be931f4074a53111060f24ee160bfcd5d28b7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests a tactic to obscure the true destination by using disposable hosting for link farms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9369

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 https://ski-experience-japan.com/images/blog//file/davetofobigokafuwibin.pdf In PDF document text
    • https://aedwea.com/upload/foto/pegusosesemowon.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/04b04d5d801c2eaa469a466a508502a7/malupegivixaka.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af783173a04---873559497.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/e1e1000945f7294192c7e6a685520ef2/wobuwedogedefijeno.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884657d1f5b---15874810918.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607752c5e6f5a---bufanopuzenofutipipume.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfdbba1731a---kinejowibaniwibirotetem.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/3dcaba500b77f736733d6f51336acab2/39750823877.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/f2tt2162k8nemrpbhph2qbbek6/kawomosizumiten.pdfIn PDF document text
    • http://computer-rudolstadt.de/upload/file/vimijowavute.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/89491468466.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/vexefisa.pdfIn PDF document text
    • https://clearpatth.com/userfiles/file/rimere.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819edcc6131---werofudufiwipoganuz.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3b2858ec66---11418433224.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6vutceudj0rmrs4matnrv4ck70/21885560637.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/kulugafozu.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/37903035646.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/nosuxuxuditusav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=computer+organization+and+design+mips+edition+5th+edition+patterson+solutions+manualPDF link annotation

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