Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bc6b77f1ed7d9f3…

MALICIOUS

PDF

67.0 KB Created: 2021-06-30 03:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 02b1a7301802bb1390f280c347d3cd49 SHA-1: d651126f676d0472bfca4318384b7831d6220c5d SHA-256: 6bc6b77f1ed7d9f348756c71fb616f3be8f654a54df4e0282cc960bdd15baad9
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms. These links likely serve as a distribution mechanism for further malicious payloads, as indicated by the ClamAV detection of 'Pdf.Phishing.Trojan'. The ML classifier also flagged the PDF as malicious, supporting the assessment of a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/999d4bea6a157febd74bff315d41a891/21996364899.pdf In PDF document text
    • http://xn--om2b25zm6igqb.com/ckupload/files/figuwogexagune.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/bdee818b7698d3e60c549f6a88dd31c5/8680941596.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/karefijagorup.pdfIn PDF document text
    • http://maristaslardero.es/userfiles/file/rajogunokezedifowoz.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160ad0018b0b1f---26930510043.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/b8d4629d664e9028d341f50f14e6364a/lukataxakov.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/15312655be783c1aead5bd368d67dc9c/vodajasevunovafubogopuduw.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160b763c83d162---dudewewajojutaxut.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/99423715c93efce224ef49d8ed29f34a/94752433886.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/11416537513.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/jozozigazuxotoz.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/xiborajama.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afa503c1d16---voboxewowexejagenufoz.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/jifttcm0ev94arla4s39rqq3og/balulal.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/b6ossetu3bo2bat3e9d4f9ctfg/wafew.pdfIn PDF document text
    • https://medtek.vn/storage/file/52651647089.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/h30njbv22vgh4o9cq7lr2v0s6e/mikurebozuw.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160cb134d57c78---puzuxulubomu.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16092666702527---8756631836.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff47225689---nuxofusutubi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=why+your+prayers+are+not+answeredPDF link annotation

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