Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee8a470940abe92…

MALICIOUS

PDF

56.2 KB Created: 2021-05-22 01:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95b5393effd7fcf9ed19c13226f6ba6b SHA-1: 1e7ee7141c06f49c352af10a29db25eae7e254b8 SHA-256: 7ee8a470940abe92fe13026597062f0187b393b592bbc2f006c37dcd944eb654
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the PDF structure and embedded URLs are indicative of a phishing or malware delivery attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9540

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://crysiq.ru/uplcv?utm_term=how+much+does+young+living+cost
    • https://alihuata.com/userfiles/file/fuwopiseri.pdf
    • https://www.latentoac.com/portal/wp-content/plugins/super-forms/uploads/php/files/mpt8vemf19st4al692vabqtpi6/99214920725.pdf
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a3bcbcb57f0---3432777812.pdf
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/04872aa901f7ed6094f0ad994f73d965/65105599501.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/82d4671ed1b73b69ad3b6fc55fad1a91/55699475357.pdf
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/b9pqbhfu85ka4g2giinecfe0ns/ruzatekafuzunu.pdf
    • https://powermailer.in/userfiles/file/xigeze.pdf
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/9a3c6d1e22e71e9e483c70003f4caa07/42300212334.pdf
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8f878e12a---suparenelabufemozipe.pdf
    • http://humanitool.ru/userfiles/file/nepagulosunad.pdf
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160818a337fcf6---nejosulefa.pdf
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/8890e251a6550deda9cadd6c7675b6e2/76865932888.pdf
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/46b3a0869c224b93d6f28b41e76dfeaf/wozopimodakofaroje.pdf
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080333bdf3f2---mimivinozusifaxupopevo.pdf
    • http://ed-web.cz/userfilesfile/25268624755.pdf

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