Malicious PDF — malware analysis report

Static analysis result for SHA-256 5543d6c3938c5b6c…

MALICIOUS

PDF

64.0 KB Created: 2021-08-12 23:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: dc0bb72c0dfe159bf8ad0ce233cb8266 SHA-1: d46c5a134f35eda862ee0e7eb3f7b2453a7c1640 SHA-256: 5543d6c3938c5b6c20f0be45c7e300936157b705a715176ff835aa12e8cea8dc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple distinct hosts, many of which are compromised WordPress sites or disposable hosting. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7964

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://ajwatravel.com/wheelmarine/userfiles/file/kofezojajakamowuzuxawebup.pdf In PDF document text
    • https://okud-istra.hr/userfiles/file/23774004710.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160757608e29a4---niluzaru.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ae4f5c9660a---ribukumuve.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/f3e19333f4df0f190da17afd6e03ad18/77738998694.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4af0162d9e0cf6e1f19364c3a117a791/winajiniratineliliz.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/7eedac16a5d48a39c675b16bda03cd7a/28217355344.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/zovaperorokokisisebekoz.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/a4a8717f6275c3af0527fa89c862b2f2/39326353019.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160882840ed75b---56784758267.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4239984bec---nuxilegaga.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/agkk79dp6r29dkumvh5chcks25/dexawil.pdfIn PDF document text
    • http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/38613564936.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/pugap.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/74948810386.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/31daa4a9272f7e66f4eb1207f33af2fd/libajidet.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c155e9a149a---56283736938.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/tepudedinakalimesoxuvezug.pdfIn PDF document text
    • http://busanpc1.com/upload/fckeditor/file/10801151208.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1aa0e7910---sowakikuxoxiwakobibufoto.pdfIn PDF document text
    • https://ventana-sur.com/wp-coIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=examen+de+matematica+para+sexto+grado+de+primaria+ecePDF link annotation

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