Malicious PDF — malware analysis report

Static analysis result for SHA-256 5196b15d6ab9416a…

MALICIOUS

PDF

45.6 KB Created: 2021-05-12 22:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 09c6c166862f3c0b191c64e6a413ebfb SHA-1: 8126f4adb90b7f579d4d89b27d534db301cfe9fb SHA-256: 5196b15d6ab9416adbfa75003b0bed52d48fc3c438c7de8b47603a2c3851ca64
154 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which appear to be hosted on compromised CMS platforms. The presence of 'utm_term' parameters and the structure of the URLs suggest a link farm designed to redirect users to potentially malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9327

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://pistant.ru/uplcv?utm_term=teri+call+punjabi+song+video PDF link annotation
    • https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/b671a1222011abe17a645ced87025d4b/60602422673.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784fa5df76e---10195847976.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbc9f1b07e---xuputukituk.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/90cfd2ed9f4fc705f543d7a1e6914d52/dagorekivevabitubu.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608e66f58c083---zebesubogafalikimagibut.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607720ee85e67---fowaruba.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/a44986fcc257fbc0084592d2eda0c53c/rakepizegal.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/a78cad7807680f9d1c788206d139b01d/koperelaladoguwidofozibog.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/kisosebotipanifudemakib.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6e893cd52---piziwomumitiwenosirekep.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977ee418751---vitasol.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16071ce877ecad---67308130751.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092d674141fd---14487954461.pdfIn PDF document text
    • http://www.toptehnik.si/images/86397307787.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/0d55a2b175366f90cd5b6c649667569e/nadeti.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1609619157483e---kiganorawise.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/504d41864ee9b74ccb8bb027d672acbe/wazesuviponupipanevedevo.pdfIn PDF document text

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