Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d10706ec0fe75cc…

MALICIOUS

PDF

59.5 KB Created: 2021-06-15 12:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: e453a57e035bd8725120a99716dfd840 SHA-1: e8f29ba044b1dbe4af25324a7496cb0adf538efa SHA-256: 9d10706ec0fe75ccd7f5681e6bfb55d8c6663100bf9e1d753baa0a9e14a9598b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting it's used to distribute phishing content or malware. The presence of URLs like 'https://archism.ru/uplcv?utm_term=android+bypass+google+account+apk' indicates a potential lure for users seeking specific software, which could lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7144

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://archism.ru/uplcv?utm_term=android+bypass+google+account+apk PDF link annotation
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16099a04071f82---juxedomosafogisafosukija.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/8f6cb19c880e79199f3da93b77f48516/pekozetafajogupenetevuvaz.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/99307537859.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160756d66d6a03---deropexiparibarito.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d89eb51d2---xosebatopipotijozi.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160885850a41b0---fijivukut.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/9668aa96d8af0edc2c9edd137dbc96bd/nuzomiwodibipagu.pdfIn PDF document text
    • http://enotecagaribaldi.it/userfiles/files/59236871239.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b2ddf3298---nefonasulivik.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/63dda6b413f7db84350cd1be2e1a0919/nonoxeburagafanisoj.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070109733bca---wizivoguv.pdfIn PDF document text
    • http://newgatedesign.com/Images_upload/files/temadamofoxano.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16081e4275a769---nibavasifugazir.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/kitajisurixelolibaxune.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/d761532e8e89273794672bfc7901b8a2/womobeworesazig.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/ce9fc2fcccf2dea32ed6d8bad8b52a0e/616838014.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/b70968249ea349d098c341cc110fd348/76768343308.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/5867156e780a456afb7fed7610143b5c/ferilexunivud.pdfIn PDF document text

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