Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae95464e4be0120…

MALICIOUS

PDF

63.7 KB Created: 2021-06-26 06:02:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: c5713c6962e981d6530af1b19dd3614b SHA-1: 637260319c0d91712b32e1920899846bfda48fa7 SHA-256: cae95464e4be01200b779cb9249fbe68f63045e3b21dac89756bac78eaf02893
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or malware distribution intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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://crewmak.ru/uplcv?utm_term=the+lottery+analysis+pdf PDF link annotation
    • http://ecohort.com/userfiles/files/geresuvuku.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/02b379eb0d37419599fa530352875e3f/27843753675.pdfIn PDF document text
    • https://guruamardaspublicschool.com/userfiles/files/nuzup.pdfIn PDF document text
    • http://terralis.eu/catalogue_dynamique/file/84021818007.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eae974e149---ranavedilupakonidilimutup.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3cb9c09fb4cf510e6e8483154ea8f263/32113324571.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/527f5943c3b05e51a0f81931010345aa/85426581615.pdfIn PDF document text
    • http://www.startservis.sk/novy/ckfinder/userfiles/files/ropebevitiditaburado.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b188f94f90---73599837242.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/kezivunuwawonatolonada.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/daa352e7f80cbcfe7afc1345fa16447b/dugipesematetiz.pdfIn PDF document text
    • http://whs1979.net/clients/65916/File/fepivexowefenoxujolese.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/fda9337b3f8c7a64e637d08e826f4c77/witanarijagugumemupus.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/01od9vlva5c7bsg532ngc0ruf9/mutolasidibadusuvopomilit.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/hlinfmg5m6l1uelge90a6m26o4/57721667815.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/gilesebokedosufa.pdfIn PDF document text
    • https://evboosters.com/wp-content/plugins/super-forms/uploads/php/files/3604bb67ee37737aa49acf180a4b064b/todin.pdfIn PDF document text
    • https://all-stage-meditation.tw/uploads/files/60b9312382dbc.pdfIn PDF document text
    • https://abugfreemind.com/userfiles/file/80646802203.pdfIn PDF document text
    • https://klairtransport.com/uploads/files/gomojofavebibet.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/83a53f60240891a87be7f54711d738e8/kimufobodasovetemo.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607636a03b026---zukuxoraxozawepizelawural.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/f256f0ccae3d8ff93c6c5516497f9f14/99373994048.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/47633296090.pdfIn PDF document text

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