Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd692dfb67b8b70b…

MALICIOUS

PDF

58.1 KB Created: 2021-09-05 23:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1af1b5d4c24ca6c1e77ce5339f251185 SHA-1: 894c5ed14aa8f8048e7b330b4cf8e9bb9efade91 SHA-256: fd692dfb67b8b70b07b1dd87482f16ba21b586df5af0b60b745831d3c67d2182
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF-specific heuristics indicates the document is structured to exploit PDF viewers, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5801

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://pistant.ru/uplcv?utm_term=pdf+yi+worde+%C3%A7evirme+bedava PDF link annotation
    • http://sambometal.com/dataroom/file/50143621532.pdfIn PDF document text
    • https://chamsocmuihong.com/wp-content/plugins/super-forms/uploads/php/files/3sbdnj1g58iojo4r3f350ctjig/xepapaxusuzapamali.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/b5491d98da6b6ef8697c122e6cca9ede/besetilu.pdfIn PDF document text
    • https://biothiennam.com/media/ftp/file/43974620992.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/sozasowato.pdfIn PDF document text
    • http://denda.co.kr/ckfinder/userfiles/files/fafapalapewejanixoro.pdfIn PDF document text
    • http://gardensyellowcab.com/admin/images/file/69061621693.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a99fe245922---76682302747.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/nekuf.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9a5facece---sijawivoberixopafuz.pdfIn PDF document text
    • http://screen.by/images/file/fevezetewi.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/30772731550.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/85962170231.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/36036027815.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b5fd4bad082---48368576320.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/70517890211.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/51794161634.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/5fd43ffb4bf5723653e70a4c2dc848f6/tuwasowaparita.pdfIn PDF document text
    • http://www.petersonassoc.com/emailimages/file/jetaraze.pdfIn PDF document text
    • https://tonitomov.com/picture/file/kadopidedebararive.pdfIn PDF document text
    • http://packamate.com/userfiles/nimanurowasosevirebabone.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/sqrnpo5ob5iiaq4qgu3dvpgt34/59276917642.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/05n94fnj0kt408mrg2sckhnsm5/lafagubajawuvinagilumij.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0fc73040bf---puwabarupuzamagimimaje.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16079bb3123987---89897344992.pdfIn PDF document text

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