Malicious PDF — malware analysis report

Static analysis result for SHA-256 c928bbb4a1c7e29c…

MALICIOUS

PDF

57.1 KB Created: 2021-09-24 05:25:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 70efa04251633deeb78d93bf3e66575a SHA-1: de5aded706ea636eba0f1d25020f870a1551d9b8 SHA-256: c928bbb4a1c7e29ca3eeedfec96e13b1db6445a0d3d0de1644bfe68e048eaff9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting. The presence of these links suggests an attempt to redirect users to malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://philabc.ru/uplcv?utm_term=juego+tipo+pc+futbol+para+android PDF link annotation
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/dvrjlpub84vrdul7r2ijr730n1/5678334430.pdfIn PDF document text
    • https://mihalex.by/files/files/xibuvinomeziberuvuvubofal.pdfIn PDF document text
    • http://transcash.com/ci/userfiles/files/8453881353.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/gufekipamenogizomotomimed.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/gosoluxebujawo.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141564d2c65f---peguvibi.pdfIn PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/29263945560.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dd6958d50b---14030301706.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/36592022494.pdfIn PDF document text
    • http://www.icf-plant.com/files/file/3958886723.pdfIn PDF document text
    • http://www.dgtrans.co.th/login/ckfinder/userfiles/files/minenajemuzeno.pdfIn PDF document text
    • http://www.vljainandco.com/userfiles/files/13342602632.pdfIn PDF document text
    • http://horvathortho.hu/tmp/55691057645.pdfIn PDF document text
    • https://www.gitialiganjlko.org/ckfinder/userfiles/files/79085642109.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/55622480226.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/tilirugubofimifiv.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/85952140776.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613df3559fd9e---logaxinanebi.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/kezubu.pdfIn PDF document text
    • https://altinhediyeler.com/calisma2/files/uploads/52245894637.pdfIn PDF document text
    • http://eltdb.com/UserFiles/files/21123186944.pdfIn PDF document text
    • https://naves.cz/res/file/1598986538.pdfIn PDF document text
    • https://red-adlay.com/upload/files/50343751857.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140764885447---38808284255.pdfIn PDF document text

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