Malicious PDF — malware analysis report

Static analysis result for SHA-256 8edeaffc64e3ff13…

MALICIOUS

PDF

63.6 KB Created: 2021-09-14 04:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c2c4eff45aa46e6089c942f05a3fa4a9 SHA-1: e08490ef29c7a553e6a748d888657e06f96460d6 SHA-256: 8edeaffc64e3ff13ed654b9481c706743799b8ee251921712251388d6f798c05
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload storage or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm, suggesting a tactic to manipulate search engine results or redirect users to malicious sites. The embedded JavaScript likely facilitates the redirection or further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6403

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=how+to+upload+your+game+to+play+store PDF link annotation
    • http://monteconsultants.com/image/upload/File/23908583339.pdfIn PDF document text
    • https://ysh.my/userfiles/file/61571992963.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/hukl8q3npgsf9luom4971lurb6/39286434065.pdfIn PDF document text
    • http://plantessentialoil.com/upload/files/81855920015.pdfIn PDF document text
    • http://prestopc.it/upload/file/bijefanebujadivofaguka.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3833c4e36---65091963032.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161358127cf0cb---65346696743.pdfIn PDF document text
    • http://faradbox.pl/files/file/52358372832.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/vujusumi.pdfIn PDF document text
    • http://smsgurugram.com/miet/assets/files/nixekamevaxowewuxetok.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/64806029590.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/valobizuka.pdfIn PDF document text
    • http://szerecsengyogyszertar.hu/editor_up/26834967447.pdfIn PDF document text
    • https://laser123.com/geektic/files/biduti.pdfIn PDF document text
    • http://avatars.ru/userfiles/file/mudimumafididuse.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136abe98b2e9---ragiwarupukalikeweg.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/roninoperibiwev.pdfIn PDF document text
    • http://www.luna1956.com/images/library/File/wuzapam.pdfIn PDF document text
    • http://raegcafe.com/uploads/files/22884472683.pdfIn PDF document text
    • http://xedaptheduc.net/app/webroot/uploads/files/zowofakuzodebov.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/waxazili.pdfIn PDF document text
    • http://pronobile.de/catalog/file/godirofetonarojirubirix.pdfIn PDF document text
    • http://schokobrunnen.com/idata/54590147508.pdfIn PDF document text
    • http://rideabikenews.com/user_img/files/buvixesumilomuwowutenulop.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/zenige.pdfIn PDF document text

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