Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ca9c6429f72a6b…

MALICIOUS

PDF

55.4 KB Created: 2021-06-15 14:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 222a49a752e7460e93c6cb7aa0a40137 SHA-1: cde546668aec3c3a3e0fe22e689014b4165ba47f SHA-256: 00ca9c6429f72a6b69a6867df8988c424c53c1e1166313d7083193b5c6b6ad2f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of multiple PDF files hosted on various domains indicate a coordinated effort to direct users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8975

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://chcial.ru/uplcv?utm_term=convert+avi+to+mp4+free+online PDF link annotation
    • http://mikailang.net/userfiles/file/20210527055616_2026347726.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/a145b6d675bfc039c0e148456c3f5d9e/panosowur.pdfIn PDF document text
    • https://embassyinvietnam.com/webroot/img/files/51560621989.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/fcdb5771dff181124a563f5979e801a5/kezajemoforin.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/ca3aad7f25844caa602edeeda6951769/48819722762.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/b91b31379a4cd714814f481902761d54/22560786653.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607667a7072b6---vefeso.pdfIn PDF document text
    • http://kudusde.org/resimler/files/zibajofawow.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16075d934ab9df---96668191773.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160831a01a09a7---xavupefanoririboke.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0fd42a5f30---ginubefujapi.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/30216508159.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e3dd7423f---jomov.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/c6389a050538b4516cc1a27a4d4c7838/85465252724.pdfIn PDF document text
    • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/mq41tbfc93qec49vg27csv5rrs/84810915411.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/39747576429.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bc69bbe48d9---titolorajele.pdfIn PDF document text

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