Malicious PDF — malware analysis report

Static analysis result for SHA-256 afac9fd152240812…

MALICIOUS

PDF

54.4 KB Created: 2021-05-15 20:54:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c272a9d0c6b231b7ae9c1c385a7ad5c SHA-1: ac5bfcd36c979457bf432875498c571eeeab400a SHA-256: afac9fd152240812c6fbad705bdc55d179d2eb3e8d857d03e2c962a2c93b6750
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics as a link farm pointing to compromised WordPress uploads and disposable hosting. The ML classifier and ClamAV also identified it as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7300

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.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/885f89919c0bdc11412f8b92985c3757/85366452262.pdf
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160809df05bb22---liwumubulanejegowufefegi.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160911a991d91f---togatopukofo.pdf
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160747a7b521cb---kusadurovarogugin.pdf
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec78c92031---17735315942.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/c6245aef5d7b396a766d01d32f0c3d4b/gulomuxupenasamo.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/ade50f4864b8488008273297594d71ed/41168210460.pdf
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0f4815196---86966031916.pdf
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/aa57b8c312ecfc521e460aef585818db/kanetimaguguw.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092f028b9bac.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d744b5d4---4439020838.pdf
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/4g9dfdnabcmah86pcmcn05bv6q/16483459953.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093fa16bc56c---xevixejoku.pdf
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/fk581a80rhug3hprgd2b870hj5/1697347407.pdf
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/16af4872ffc22a9194a1c4e1c637532a/lexijufelaxogej.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/6418e04ebc9f4fe711370f320878999a/bixemojexugapudesofal.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=android+oreo+remove+google+assistant

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