Malicious PDF — malware analysis report

Static analysis result for SHA-256 c154905700fad389…

MALICIOUS

PDF

54.5 KB Created: 2021-05-30 21:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9954e97c91d934bf873c6cc3c22289b4 SHA-1: ffca614f2bf62222e688262b191d1e88df9e3bd2 SHA-256: c154905700fad3895e5f9508a5e9d643aef8a640087ac4c50ad6b285dbdabaae
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised WordPress sites acting as hosting for other PDF files. This structure is indicative of a link farm designed to obscure the ultimate destination and potentially distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6509

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://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/caec8d770eb79d5a16a0f5f4bccb818e/vagupilekedusibawave.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/b5dc88e35dab732271e3f05214a2f4f5/zibinepojopik.pdf
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f97606dc95---64782255504.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/2irfgub3pu5tbv7htqudqp13s3/37762267392.pdf
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160944b98bf993---4063327910.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/16079475d68d7d---53543959042.pdf
    • http://mulroyenvironmental.ie/userfiles/file/poxakipubamenape.pdf
    • https://patc.fr/imagesfile/46263160105.pdf
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bea3eddb8---befoje.pdf
    • http://sunjewelsonline.com/userfiles/file/43119363371.pdf
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089eab59126e---96039074460.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/147b0df9d5f56946b11c02aa75d743c7/govigogipexaligerokafokar.pdf
    • https://senhewood.com/d/files/losimumumetozododexubab.pdf
    • http://assushop.com/userfiles/assushop.com/file/dalofopaduwugelijege.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=harry+potter+and+the+cursed+child+movie+release+date+2019

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