Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0d65e61401e5f4…

MALICIOUS

PDF

50.7 KB Created: 2021-05-14 22:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2eeb9617b3877008dddb781b1866c55 SHA-1: 1ca117bfac6cc7f8e9bb9f1a9d7c152572cec842 SHA-256: 0d0d65e61401e5f435bdacc3f507470b7e17c9f227bf8a3391fd167121a93838
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. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute phishing content or further malware. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, indicating it was likely generated programmatically to serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6925

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://queure.ru/uplcv?utm_term=bhakta+kumbara+film+songs
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075280f30f4a---danumurimedevuf.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/7de0ee22211172bce443acec5dede07b/solinote.pdf
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/fojeliguzijovur.pdf
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/f89e19a46a1eab5689f3482097ea1eeb/54824584252.pdf
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609733089486c---26370987417.pdf
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/87qv33hermfq30eq7c3inbp629/93711079341.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160752c604a3f9---mudawul.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/b3bc49a79cdf36961103e85a092b5b33/wimilazixesunomanulijo.pdf
    • http://airconbank.com/upload/fckeditor/file/sowadanuna.pdf
    • https://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/74bfba4618dac988ae4fe131688fb1fa/giporosobajavofobuduxu.pdf
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1608405429a2c7---95932196071.pdf
    • http://ajivikafinance.com/userfiles/file/23427104308.pdf
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609157c7a1967---sejati.pdf
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/qkuvhbkmml7bcq4qrdklgagc27/jelugodafodigesu.pdf
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099ff7aa32a9---zigutezepujizotabebovetoz.pdf

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