Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0ef1902dbd6f7d…

MALICIOUS

PDF

63.7 KB Created: 2021-07-17 21:34:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2ecb84e1512237858fb3409f7d1e50b6 SHA-1: a3c704692ad2a857672795610994bc2b16c3423c SHA-256: 8c0ef1902dbd6f7d68b1018f954c041874faa00a2fb5d14fb35fc78c7fa602b3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm designed to redirect users. ClamAV detected this file as a phishing trojan, and the structure suggests it's part of a phishing campaign. No scripts were extracted, but the presence of external links and the heuristic firings strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4984

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://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee2ac35d0c---7550455343.pdf
    • http://erfaspot.com/resimler/files/29238402477.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/rj51l4d69v8i767bm82mvavsa4/kijadobimiduwun.pdf
    • http://sanarina-coaching.de/ckfinder/userfiles/files/xajovodaxigalixisudewepog.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7166023d5---79527852350.pdf
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/21191598022.pdf
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2e0db93ba8---wezabawoburawufoboduzu.pdf
    • https://aneri12.cz/res/file/luzute.pdf
    • https://art-lamps-rali.eu/files/file/7217900306.pdf
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/a7b5696f438c62d375730f18dc62d762/jizuzipilusewasira.pdf
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/562734b27e86217ec0424eafb8c138b7/favigupege.pdf
    • http://josepholszowka.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vogagoxevedefosuziduziwo.pdf
    • https://butterfly-propertymanagement.com/userfiles/file/zisovagima.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c6493fe8c---32096963805.pdf
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/0e83e854b5851a0d48b124eb42048195/vijaxifizipalibuguj.pdf
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093a838410d1---70312458390.pdf
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/ijl27m6cdk2oqng4bnkum3ovf3/wenorumirubir.pdf
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/8405a747ec222197dd9862e5d55512c4/tabizezudotuvogupotas.pdf
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093c8bbed27c---77777657064.pdf
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/6e8757a151623f82d482d851137cdff5/teratutamekinimi.pdf
    • https://lawyerupsmart.com/tempimg/file/61470367257.pdf
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/918db332a9553dbbe84f4e0b6be75238/23135324447.pdf
    • http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/7645175613.pdf
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/36mmbi1djuga5f0pgi4c072qf1/43313856297.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=40+pounds+in+two+months

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