Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb43ec6776f5b6c…

MALICIOUS

PDF

58.2 KB Created: 2021-09-06 08:12:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 75f29e476fc116bcedf6817a6b3048e0 SHA-1: 02a93744779472005998d7f423ac411d2ee09c1d SHA-256: 0fb43ec6776f5b6c9631947dd5e7b7c5bbd8f8f56eec9e2e31ac056a8e20bf00
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous URLs, many of which are hosted on compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple compromised CMS upload links suggests a coordinated effort to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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://gmtshipping.com/attachment/file/81947764167.pdf In PDF document text
    • http://goodfortune.hk/UpLoadFile/file///somirudogi.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8e51bd1ced---55938129954.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882384ce2ac---faxolepaloputug.pdfIn PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/nedaba.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021051203340834.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/0e85b27838c5d279b2836ca82ef0570d/52778688638.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/86606039251.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/a88aae7b19328e26341f7ed19d5834ef/43607470567.pdfIn PDF document text
    • http://eva.am/files/dfabded77f8b2740.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/70916160134.pdfIn PDF document text
    • https://washlounge.in/ckfinder/userfiles/files/dojavi.pdfIn PDF document text
    • http://recrute.fr/files/files/97671425930.pdfIn PDF document text
    • http://kammed.com/userfiles/file/68994979474.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/23741371633.pdfIn PDF document text
    • https://alkirbilaw.com/userfiles/files/xuwawakegalavotigemoluwe.pdfIn PDF document text
    • http://metalzilembo.it/userfiles/files/ruxidejili.pdfIn PDF document text
    • https://resortweeks.pro/userfiles/file/ganetuwonolowag.pdfIn PDF document text
    • https://abeess.com/userfiles/file/sudiwakerojilufineraf.pdfIn PDF document text
    • https://flyags.com/editorResources/file///nijoxijidozitepof.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d356f1a4280---sanowepa.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/bba54760a0d412873ece4270e1dac49c/95422309780.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/nezinatetokofisapi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=descargar+libros+de+medicina+interna+gratis+pdfPDF link annotation

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