Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3f1c0cb6af5c08d…

MALICIOUS

PDF

69.3 KB Created: 2021-06-17 07:13:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 02e7f292959b8e6d808170e13eb2f659 SHA-1: 242b8debe79051a95a6a95612295395838ba3d3e SHA-256: f3f1c0cb6af5c08d12561d2ed4fe8903b80f887aa12e2ad72cf6c5f17727ed94
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting it functions as a link farm to distribute malicious content or phish users. The document body, though heavily obfuscated, contains references to 'online pdf to svg' and 'wkhtmltopdf', indicating a lure to disguise its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9035

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://garglob.ru/uplcv?utm_term=online+pdf+to+svg PDF link annotation
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/994b0f68de4666caca413764b25df2df/63222400999.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a8aa88a083b---pelusikabimakubifixuxaju.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcb6389461---75241444488.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160782852d3fd7---19608645567.pdfIn PDF document text
    • http://prunay-en-yvelines.fr/ckfinder/userfiles/files/23438123328.pdfIn PDF document text
    • http://makingtheturngolf.com/clients/9/92/925d9bae4ecf380f28dbe0e1390c16eb/File/7955797127.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/92705562946.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b92d306e18a---8287425424.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/6da965ca26da660fdb4abdae201e44fe/57803443020.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/auhcjkiaumhr6ig7mlbifpc74i/50253464230.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a4feb56780b---23244477246.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/70082458503.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/6kvlo02tbb1qasm2p0s0alf4r6/22870006669.pdfIn PDF document text
    • https://munord.com/wp-content/plugins/super-forms/uploads/php/files/385162072cc03a1f4ba1d578b6ca483f/zimewojada.pdfIn PDF document text
    • http://alternatifmedikal.com/img/userfiles/files/nalobeb.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/g2lae0o6ilmm9c1bmq8orpv7v2/kufixizalepenipomodizeb.pdfIn PDF document text

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