Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e1a7fd56adf714…

MALICIOUS

PDF

63.6 KB Created: 2021-07-20 16:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 87c844fc4af74cf920c0cb6a5a36221f SHA-1: 7289f63df2fc72de016736132c566520f0929da1 SHA-256: 69e1a7fd56adf714d6a1e2e0d9c3a761e03f098be3fb0b6eec2e74211ac71c7a
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable, so the rationale is based on the URL heuristics and AV detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092395c54ff2---73766652419.pdf In PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/tvlr565qdnfitglg28g5a3eae1/46093928777.pdfIn PDF document text
    • http://elliptical-trainers.ru/ckfinder/userfiles/files/95465379448.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/4661e483738caa575f6390096f7bb3c9/80168729694.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efb7e6e726---wigorisasofitakodaw.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab77b56caa8---45410538731.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ad918a18a7---rugojudas.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743a8098953---94184988842.pdfIn PDF document text
    • http://diakmelo.hu/ckfinder/userfiles/files/53250119346.pdfIn PDF document text
    • http://wych123.com/upload/files/murewofazufo.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/8tg55hgbndubfk5k6t9tfmfg02/wofed.pdfIn PDF document text
    • http://placc.info/up_image/wisabisija.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/74668783226.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078074835158---vepuxefali.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099e2b5ac765---xarixu.pdfIn PDF document text
    • http://thestarbusan.net/FileData/ckfinder/files/20210629_B04A85362E0D14F5.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/67769398568.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8c0b5704a---98457582965.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/02b7c77214364f8bc82e2dd4a43611aa/kevepopevekuxupupanamad.pdfIn PDF document text
    • https://auto826.com/uploads/files/surewinevepoxukelo.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a418ef4ac4f---18997538082.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=nude+party+storiesPDF link annotation

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