Malicious PDF — malware analysis report

Static analysis result for SHA-256 5007f473bb9b5431…

MALICIOUS

PDF

63.7 KB Created: 2021-07-27 01:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ddd08c8e5a7b41eb31ef105b2cbc9343 SHA-1: 17f42d2cd89a2526153272c445ec7f1fe4ddb13c SHA-256: 5007f473bb9b54310b6db8e363e6e0c578692cce1812b3d4b59494e0e6bec63a
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, but the overall structure indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9709

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a03ad0e8d70---80379344290.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bd1daed3c4---kisamuwelipelalub.pdfIn PDF document text
    • http://aristosaigonhotel.vn/uploads/files/72257683625.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f934d2b24---zaval.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d971f0aea9---nesokuzexuju.pdfPDF link annotation
    • http://meteosputnik.ru/userfiles/file/kuzebadoja.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/43g216nb6guudtqqi9lmmakq84/fokabitozivukeme.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077fda2bbb79---kewijafow.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160b5256a9b503---22882628958.pdfIn PDF document text
    • http://gabortech.com/admin/file/rubasupikezuvoma.pdfIn PDF document text
    • http://blackivy.pl/userfiles/file/xozenojugogujalixinika.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cdc79ca413b---ratizojejikekatam.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1607cfb53cebee---wuxibijijuwedafan.pdfIn PDF document text
    • http://suankaew.net/upload/userfile/files/57984130715.pdfIn PDF document text
    • http://bclgrouptt.com/userfiles/file/32176185654.pdfIn PDF document text
    • https://cupanghitam.com/contents//files/78244100316.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dfdfaddf0db---15812862947.pdfIn PDF document text
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/49415016295.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/g5vcgta2p3l8m7mjdt94ac32i9/mapimezexegabaf.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f46a8c087---27662665506.pdfIn PDF document text
    • https://dimensioninteractive.com/WYSIWYGImage/file/milatepitoruti.pdfIn PDF document text
    • https://biogenetixpharma.com/ci/userfiles/files/58264722917.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/53989835099.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mkvcinemas+hollywood+movie+hindi+dubbedPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7769dc2343---73138066452.pdfIn PDF document text

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