Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adde6456490f4f2…

MALICIOUS

PDF

63.6 KB Created: 2021-05-07 05:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0c31568f027bbfe773416e976d8b529 SHA-1: 6e514fdb1883d7918908d1e0436a92f903424607 SHA-256: 8adde6456490f4f23ed9e27dca50c2ebbad1fabc516691b86356d18b35e8713d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The embedded URLs and the heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7632

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://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094535077ebd---79290254972.pdf
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/66q7fntt66j1qgbk42qcdn3vr5/sujisizepozukel.pdf
    • http://rld-carbon.ru/file/marulafurewaguvazo.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160943b55319d2---46337392958.pdf
    • http://apexhealthnutrition.com/newerac2c/userfiles/file/dufujuwadotal.pdf
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/221ef55af1888484f5f3239e2e733e78/firab.pdf
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/ka70b82gsnsjt77be8cov4igks/rusefarox.pdf
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071e8b181d60---tadubizerawep.pdf
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160924d629b653---manupevadoxapa.pdf
    • http://spreewaldatelier.de/img/editor/file/59083404310.pdf
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/838a74d1bff0b2f2a617269a3aafcc30/15463356018.pdf
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d45d8e5d5e---63724539045.pdf
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084c9e0f093d---85437256198.pdf
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b32cb60e8---27317548772.pdf
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16083bf094c697---kajorejapitelufofe.pdf
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/10030071293.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=camera+raw+photoshop+cs6+portable

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