Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f8e5ede9006853f…

MALICIOUS

PDF

62.3 KB Created: 2021-09-08 03:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4574394fcff6c244df30215696a22531 SHA-1: 3752a8795753a8d12079ce71f9f381dad0da60ac SHA-256: 8f8e5ede9006853fdb08bfcdfdf9501eb565a04d21e6ea988d0cd96209ed794f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to other PDF files hosted on various websites, some of which appear to be compromised CMS uploads. The primary goal is likely to lure users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6040

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://synerhu.ru/uplcv?utm_term=mini+jambox+user+manual PDF link annotation
    • http://pwr-tech.ru/userfiles/file/63415573702.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/devadujobudugit.pdfIn PDF document text
    • https://pharma-tools.eu/galeria/file/98706244454.pdfIn PDF document text
    • http://fvv-hohenfelde.de/sites/default/files/files/kozed.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/5a984ec17937096d42520f6053bcbd81/wizivunujepabaf.pdfIn PDF document text
    • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/43903b668392b3d90bc5618a3dfcdf47/61479602941.pdfIn PDF document text
    • http://zhuoer.ltd/userfiles/file/finiduvusaposugakulev.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/c3a10515aebf6996f375e13bac317b98/22013602138.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/161135c38ef53e---tovapivam.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/5474050922.pdfIn PDF document text
    • http://avsa.org/sites/default/files/images/files/95057819075.pdfIn PDF document text
    • http://hillhouseclassof1961.com/clients/c/c9/c9b049383fb65e98d0a4dcab6c176392/File/kaminizafobufumaxoluxu.pdfIn PDF document text
    • http://duoctruongxuan.vn/userfiles/image/file/worufofokotur.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16081461b30473---wanawiraj.pdfIn PDF document text
    • http://chhattisgarhsanskritboard.in/sharpinstitute/images/files/bowokakudifidisuwuf.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/vurebuxamera.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/xufekeligijevavalubat.pdfIn PDF document text
    • https://tkquiz.com/userfiles/file/mejarajabeniwise.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160895cd33ab78---75350046006.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/t8ub61cs6m3b2hml99t1jl45ie/55872021654.pdfIn PDF document text
    • https://villatoscana-pi.it/userfiles/file/gedisoz.pdfIn PDF document text
    • http://ombs.ru/uploads/files/ligipatimasimaker.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/e302a5b05f47299ea594062fcc4caf6e/4846354719.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6e2e041a0---mizaberirifafiza.pdfIn PDF document text

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