Malicious PDF — malware analysis report

Static analysis result for SHA-256 094810115eb77146…

MALICIOUS

PDF

62.5 KB Created: 2021-06-17 14:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25cc64244db524d4f0d6ce4536339468 SHA-1: 321a4d4401154c39f81b8d943c727d8fccf54d98 SHA-256: 094810115eb77146a6a7cd83708074961a8d3eaf7df704fcae0c0187b1e55f4d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9311

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://irlanc.ru/uplcv?utm_term=relative+pronouns+exercises+with+answers+pdf
    • http://www.alex-vasilkov.ru/images/wisdom/file/togukelolikozivutar.pdf
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/jrra6e89p94dsd5g5l2bof8977/74424877581.pdf
    • http://ajtoablakcentrum.com/_user/file/59342795770.pdf
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f68b53f554---11087934091.pdf
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/391f4e792cd92e833d35b4d5cd973a59/jipurabinaniminanagipuza.pdf
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/nmce98ihmd6mrn10q7hgj6cg5d/mukemekujeximaduzap.pdf
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/61db220854c64476eadf8ba63ce4042b/55770853770.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/noeg8a6qcdjf10okn94krn3d55/fegupa.pdf
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160832e7adda42---55272900366.pdf
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd47d2dcd7---2210197581.pdf
    • https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/e3fe7bb3bef16c69e5c51b342019989b/29353089411.pdf
    • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a74df590618---jupuwelojezado.pdf
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/446b46fb966189174a4182697eabcbf7/pokijabadetowisofefoga.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767905c1f75---dipugiteropigafu.pdf