Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bb0049f04b4ff3…

MALICIOUS

PDF

72.2 KB Created: 2021-08-11 09:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dc6e98661f0675f6fef117460bb2a3d1 SHA-1: 46d5a84f22b496be1e6e5dbaa52c405f9860638a SHA-256: 27bb0049f04b4ff3f1ea50f98e55e41d854f9800895cdf1e9f3aa38f432c1d6b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_RANDOM_URL_LINK and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates an attempt to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4660

Heuristics 6

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc0c4e9da58---4078954883.pdf
    • http://evohome.pl/userfiles/file/5974355989.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/bcb179d5fa6b3aa1141fb79727d5ec40/najijeluwekapalexumaxa.pdf
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/b4948fadd0ec91191a0bea1bd080d306/nojepodepuvopodave.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/iisk41nilb0326e2sjl6r78md7/8347223689.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609892b257a32---manojufapegolivoru.pdf
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/m9ch4le7q43guo481b46b3io36/43344320403.pdf
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d89d866f5---9305621949.pdf
    • http://stolizstekla.ru/userfiles/file/58833936079.pdf
    • https://aawyx.com/sites/default/imageuser/file/minijimonudixozebamapewa.pdf
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/33611a2f54696cf8bc70041b6a2f35fc/revenaxejos.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1f7067675---bisasovo.pdf
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/jixuw.pdf
    • http://intergeored.com/upload/File/gisusad.pdf
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609a281cdf581---fodavumogidulenuxesin.pdf
    • http://ronaldtan.nl/images/photo/96098746066.pdf
    • http://ozona.pt/wysiwygfiles/file/satoz.pdf
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/1f14b7074a1e3160985575c14c56759d/89264653529.pdf
    • http://www.odnpoznan.pl/fotki/file/file/39491646014.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160796d4b272d4---55313548049.pdf
    • http://shippingengineering.com/files/ckeditorothers/fumotebalex.pdf
    • http://wecans.net/_UploadFile/Images/file/23905615606.pdf
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095791d6f5f0---53814511961.pdf
    • http://csc028.com/userfiles/file/20210616075650_j1bukp.pdf
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/umsn43rdaaddgmulf77bqsgirf/39899836307.pdf
    • http://chistogood.ru/admin/ckfinder/userfiles/files/18470607698.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+download+wcc3+mod+apk

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