Malicious PDF — malware analysis report

Static analysis result for SHA-256 91959572edf7afe4…

MALICIOUS

PDF

59.3 KB Created: 2021-08-30 10:55:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 560221f3045dcc97a40bd2ea40277c05 SHA-1: 58cb2fbae99acaebe67935a1d506ebdc02d98707 SHA-256: 91959572edf7afe477d2e316698e6395db9fd8b556d5e78e1cc25c721713f857
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites or disposable domains. This pattern is commonly used to distribute phishing content or malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6984

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://lamaisonducoeur.ca/upload/editor/file/tijuvojovosodi.pdf In PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/84074aaa6e090058ec28e5c65e84db1f/32426876084.pdfIn PDF document text
    • http://win-sonic.com/ck_imgs/files/59216708621.pdfIn PDF document text
    • https://victorybear-info.com/userfiles/files/32672672711.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210704170350.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d4720126918---64455635351.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/batexi.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/40940943165.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160860cfce2ab5---weloken.pdfIn PDF document text
    • http://uhli-janmaria.cz/userfiles/file/dadowiwurovibosunaginebi.pdfIn PDF document text
    • http://myconnect-thailand.com/image/upload/File/81486810355.pdfIn PDF document text
    • http://kubabus.cz/novy-web/upload/file/xokofapasezinosode.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c8e2f088f31---dakekokazuvosubemomamebuz.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/potonujunozadedatofutik.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef36c01a0b---20514460356.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0c95e22ce8---kidudupavinepenuzixogopal.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072ba494a2ad---21670919786.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-8/20210508112901639352.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c685fb3d3fe---34398117296.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=intolerable+acts+definitionPDF link annotation

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