Malicious PDF — malware analysis report

Static analysis result for SHA-256 abfaf8f6d0d0bacc…

MALICIOUS

PDF

183.3 KB Created: 2021-07-17 23:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0f70b110b2d843620dbcb58a8cf17bfe SHA-1: d530a120d627bba9a93b25db265d855bc490a834 SHA-256: abfaf8f6d0d0bacc590d313328eb69090c610fdfc075450a4d0220ed9204cbcf
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, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised websites, which is a common tactic for phishing or distributing further malware. The presence of multiple links on potentially compromised CMS upload storage suggests an attempt to obscure the true destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7926

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://tivatijapan.com/uploads/userfiles/file/24144485375.pdf In PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/47767034624.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/41885460801.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/84b81281c74841042c2f7ac926448152/19797305284.pdfIn PDF document text
    • http://leguido.net/files/98755532050.pdfIn PDF document text
    • http://hydrem.ru/images/file/sujezijivodudutizulat.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/a15ac2ad9646bf9b304e81911efaebcf/58863410301.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6a1a5171d---1996534880.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/fexiravunosipibokanu.pdfIn PDF document text
    • https://tungafilm.com/dorceiys/ckfinder/userfiles/files/78634011581.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b1ef1d1c1---sebigepisixu.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16087cd883e8d6---74432035834.pdfIn PDF document text
    • https://karpzbeldowa.pl/uploads/userfiles/files/14966038946.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/29457095951.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/gotakutonun.pdfIn PDF document text
    • http://trendstyleimage.com/uploads/ckfinder/userfiles/files/rasusimuxoxi.pdfIn PDF document text
    • http://kpdb.org/userfiles/files/dopilogafofis.pdfIn PDF document text
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/579d2265079ebdcbd24c60055a47b146/sasewavapazasefolosu.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/sipevinonelirixor.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/24007717674.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b08d4b059---40563669595.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=sad+poetry+for+familyPDF link annotation

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