Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf12f066e5de0a10…

MALICIOUS

PDF

70.8 KB Created: 2021-09-20 11:06:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9c693f30513554e495614ee9a9c5ac80 SHA-1: a276f7312997cc59591ce66455afa7ab9167267d SHA-256: cf12f066e5de0a10313a6e1d3c64591c3b6c515c0598ef4d4fe5528a0651f80b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are likely used for phishing or distributing further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high score strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure itself is designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=how+to+share+files+from+android+to+pc PDF link annotation
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1613e05ea95653---84794006895.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/37078954956.pdfIn PDF document text
    • http://residenzaeden-albisola.com/userfiles/files/64785547540.pdfIn PDF document text
    • http://www.mattig-accounting.bg/fisiere/file/fazixosagoranovejupim.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/49124751450.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210916054512.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2021090806050573499.pdfIn PDF document text
    • http://ngocvietbungalow.com/upload/files/81764305047.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/nl1t6tm1hu30holfegn5224c5l/parenojenusutupuwizi.pdfIn PDF document text
    • http://adirondackseafood.com/ckfinder/userfiles/files/93201374640.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/20360692114.pdfIn PDF document text
    • https://calendarsunrooms.com/userfiles/files/54358312746.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/65944635789.pdfIn PDF document text
    • https://standsimulator.com/ckfinder/userfiles/files/kitudazafot.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161478106a09a1---99274694680.pdfIn PDF document text
    • http://sbcnepal.com/images/file/2573774482.pdfIn PDF document text
    • https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/31919665991.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/68544833711.pdfIn PDF document text
    • http://southerncross-ex.com/images/blog/file/wajobesagozanaxufasu.pdfIn PDF document text
    • https://thepainter.asia/upload/files/gabikete.pdfIn PDF document text
    • http://dr-temt.ru/images/file/26673943052.pdfIn PDF document text
    • http://kamnitikamini.si/upload/files/komobirulas.pdfIn PDF document text
    • https://patriciogaete.com/upload/file/kixipo.pdfIn PDF document text
    • https://truckforceone.com/upload/editor/file/nudeperovudilinupabuni.pdfIn PDF document text

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