Malicious PDF — malware analysis report

Static analysis result for SHA-256 145d84a337408137…

MALICIOUS

PDF

55.7 KB Created: 2021-06-23 04:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d376c8fdf3aa2d08279081aa13dbd7dc SHA-1: ca50655383610363265a15773aee342fdb804a34 SHA-256: 145d84a337408137cd299582ddd8251ace2f4d4b7eae633c46123947ca2b3932
154 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a link farm pointing to multiple domains, many of which appear to be compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs and the overall structure indicate an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

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 http://walkercombsfamilyreunion.com/clients/d/df/dfd517ab040340b2551da60fba195f5f/File/bewupesawoduxasozupa.pdf In PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/39408183424.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ae98d33df32---wobelop.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/c28879fe21a8a660c8dbc07fd754153a/jebixuximel.pdfIn PDF document text
    • https://dansobentre.net/uploads/file/bamewolefowosunezizo.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16085f5c840950---winidu.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606caa193847d---kuwitazar.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/a7e7e11a8aafc0917557e62b1eb71df3/91098116575.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6eddb0225---pejojepaxalo.pdfIn PDF document text
    • http://boxethai38.comupload/file/90276772398.pdfIn PDF document text
    • http://utuin.net/files/fckeditor/file/28916456808.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160af8c560e9e3---11895676685.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/21661020867.pdfIn PDF document text
    • https://oklasik.com/ckfinder/userfiles/files/vosobazuretavafip.pdfIn PDF document text
    • http://blesk-stroy.ru/userfiles/files/falop.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/pasokewolofexidevujorozan.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/42798478195.pdfIn PDF document text
    • https://wickedcheesy.com/images/file/sagepoxikuwasategu.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/t97ljletk839hv504vlnj7fue5/19966623332.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=maryland+driver%2527s+manual+practice+testPDF link annotation

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