Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60e29a5a0fb1b96…

MALICIOUS

PDF

48.0 KB Created: 2021-07-17 16:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 30230092f2195bb1a12725fed25bde87 SHA-1: 1b0c169c2ce6969dd7cb89fbd982cc127285ea5b SHA-256: a60e29a5a0fb1b962f5e4c1e673a2d870e17bf3a55801d4ec9033f48e1d8b05f
154 Risk Score

Malware Insights

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

This PDF was identified as malicious by ClamAV and an ML classifier, indicating it likely exploits a vulnerability or attempts to trick the user. The heuristics reveal it functions as a link farm, with numerous URLs pointing to other PDFs, some hosted on compromised CMS uploads. This suggests a phishing or malware distribution scheme, where the initial PDF serves as a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5740

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://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160ab131b7dfd5---95168272046.pdf In PDF document text
    • https://bursac.net/userfiles/file/siwisimifeduvaji.pdfIn PDF document text
    • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/iakchu98cqpv3aec4g2g70mq71/banizazidik.pdfIn PDF document text
    • https://bluza-shop.ru/content/File/sexazaput.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086088ee37a2---farinipotuxidap.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b23367b85---jabinosomijevixusod.pdfIn PDF document text
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160aad5f52881d---xerukabogamofegoluzisuxor.pdfIn PDF document text
    • https://haidangpc.com/contents/files/defixaxa.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/wesokenikonasuzopanixeruf.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/cdefe8e243d796402882a20b5293a656/jivonivikupini.pdfIn PDF document text
    • https://securitydm.com/slicice/file/35821523377.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/mo1e8a2ve7ito3fnkehp4s595h/sizeporoxasu.pdfIn PDF document text
    • https://taechoclub.com/FileData/ckfinder/files/20210624_EE4FF4B26F25372E.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/41348388683.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc35ab22d6---77052358795.pdfIn PDF document text
    • https://stka.gr/ckfinder/userfiles/files/15698097956.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a072a122013---9852774829.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad0e57d494---10675821949.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/c5f7d6e9c031d89256d0a13430432c94/taxuxugujaruji.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/fb4168d3bdb164ca0e667d2c45d9207c/tuwoxawajidizakuvonuzexo.pdfIn PDF document text
    • http://nationalcoopadvisors.com/userfiles/files/tubibud.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b467d0eed96---18512935879.pdfIn PDF document text
    • https://letstravelforacause.com/miet/assets/files/fevixa.pdfIn PDF document text
    • https://digireg.it/upload/zekarobubujesiravuzak.pdfIn PDF document text
    • https://protrialse.eu/files/files/2907791531.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/9fd10fa962478c62abb5e2a3f93204e3/nalegogimig.pdfIn PDF document text
    • http://wardwrightself.com/clients/863644/File/50931841912.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=econometric+analysis+of+cross+section+and+panel+data+2010+pdfPDF link annotation

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