Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e20dc162f4424f7…

MALICIOUS

PDF

63.6 KB Created: 2021-09-18 00:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3c5505b18a2308ca52fe68981f88793c SHA-1: f7e6a3155dc8a837c300cb1c54e4e167a936b777 SHA-256: 8e20dc162f4424f7ffdc68bba73c9ea32f86733458b9675808562c9a987d9ae3
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and a machine learning classifier, exhibiting characteristics of a phishing lure. It contains a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated and appears to be a screenshot, further supporting the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5526

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 63 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://sindicav.com.br/ckeditor/ckfinder/userfiles/files/22140512942.pdf
    • http://camelliafb.com/uploads/files/202109061450527582.pdf
    • https://ppkh.net/userfiles/file/tereganuvezotowuwewef.pdf
    • http://larrysiegellaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/selurujogi.pdf
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16139090c442c6---zavutari.pdf
    • https://miaousland.fr/ckfinder/userfiles/files/94270304833.pdf
    • https://privatecambodiatour.com/userfiles/file/89502512814.pdf
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613654b5b3a7b---58683441483.pdf
    • http://hastensandbreakfast.nl/userfiles/file/xejadenozakokopigud.pdf
    • http://thinhhoanggia.vn/Images_upload/files/59370459216.pdf
    • https://zhbiotech.com/CKEdit/upload/files/41551833175.pdf
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613516b155fc6---bokitalumepaz.pdf
    • https://akgoz.zemta.com/uploads/files/76413268227.pdf
    • http://richardchong.com/userfiles/files/51006462279.pdf
    • http://studiosimonepantaleo.it/userfiles/files/vijadisinibasolitodenus.pdf
    • https://warsztatgdynia.pl/app/webroot/media/files/segoxebijufegarolatetema.pdf
    • http://salman-group.com/userfiles/file/duvofidojozavimobamusiv.pdf
    • http://3e-machinery.ru/app/webroot/filesfiles/93294959998.pdf
    • http://fantacyhandicraft.com/userfiles/file/nilegetezogigejujelaxo.pdf
    • http://turksebruiloften.nl/userfiles/file/gajonilobeza.pdf
    • http://falconltd.pl/cache/file/86482144866.pdf
    • http://unternehmensberatung-hegenbarth.com/userfiles/file/tanefovemovi.pdf
    • http://373113.linker.tw/files/bitij.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=spongebob+coordinate+graph

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