Malicious PDF — malware analysis report

Static analysis result for SHA-256 42a678e758b93f34…

MALICIOUS

PDF

159.6 KB Created: 2021-07-26 07:58:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: dbe844b18518087bcf9d02e8247a9dac SHA-1: 6bbfa29e947d6336cb92b82fb6ac6ae0c4ccab50 SHA-256: 42a678e758b93f34f0276147a3dc407cac8e7f85d5b0beeb94dc12e2d371c1f0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites, likely intended to lure users into downloading further malicious content or revealing sensitive information. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://aksaaydinlatma.com/img/editor/image/file/35876899630.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b90a2c6a9f5---zitamatizidigalokato.pdf
    • http://daehwa.info/uploaded/file/17915680134.pdf
    • http://residenceraffaellotorino.com/userfiles/files/51508639473.pdf
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609df9c44c08e---kedimu.pdf
    • http://ventss.ru/userfiles/files/gosinaxovezexovobawatimov.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f55f71e57b---84747530003.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160945aa31ff5a---fuxaviwu.pdf
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/afadedafb3dd7efa0f5feb8fd9d70806/38507062649.pdf
    • http://ulv-fogger.ru/d/files/1137247256.pdf
    • http://rudolphalexander.com/uploads/files/93007541233.pdf
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/1v3g0st7aejfrqp4k6agv5fa52/jawiroz.pdf
    • http://champaigncursillo.com/userfiles/file/moginutinop.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd4b1b0a82---48553049896.pdf
    • http://wallsfamilyreunion.com/clients/876683/File/kedidesejapawed.pdf
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16098bf395b59b---86358660107.pdf
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2eaa16b7e55127def82b40da98f32635/63714993287.pdf
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/ame5qdlg91tq93eoiddjpg6jb1/jimulanub.pdf
    • http://simonide.org/userfiles/file/50950486815.pdf
    • https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/c6d8d77ca943d2a2f2450bdfdc45db16/joxafibodamuba.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757e8c7a8b3---titux.pdf
    • http://absolutelyneon.com/userfiles/file/tejelotuvurowemijewi.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=modern+elementary+statistics+12th+edition+answers

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