Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2bfab796a8a9e56…

MALICIOUS

PDF

85.6 KB Created: 2021-08-10 02:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 853b6db45f7059d3a754c6f945e962de SHA-1: 5ca97fcd050f1fbf7a918411229a9235327769d9 SHA-256: a2bfab796a8a9e5651229ec04262c81625d5c8e6f8cc201277d4741f673048db
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/nus9amc7gnn7l3aupeoq67u3i0/kuxito.pdf
    • https://silverlabpupsforsale.com/userfiles/files/26144181112.pdf
    • https://namratalakhotia.com/userfiles/files/jopemuribopufu.pdf
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160779721c665e---bipaxixezorufidonojoko.pdf
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4514b8f43a---zazewameluxudalod.pdf
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d1431eb41---27494639012.pdf
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/f38bcf2ee7ed92edfd2c9b37a29c4ab0/93170070614.pdf
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/d9c976771b5c4572843a888f25a3f373/44205404004.pdf
    • https://amatnieks.lv/pictures/image/xetunututawipow.pdf
    • https://frontivo.ro/userfiles/file/2548046890.pdf
    • https://eyetracking.pl/userfiles/file/dudagepipijitejagasa.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607e03a0d2397---69420670178.pdf
    • http://project-lovcen.me/userfiles/file/61600078630.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16096ba0ff3f0e---tomukisirox.pdf
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/39c215472aa7d5206edb4d4bbf4c3f52/76225458235.pdf
    • https://keongracun.org/contents//files/lumas.pdf
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c101667a5d7---70527467479.pdf
    • http://ytbozhuo.com/upload/file/211103384123.pdf
    • http://kadh.kr/bobod/upload/file/bowakewipedenes.pdf
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d6b4787a7---nopixamewik.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=%D0%BA%D0%BE%D0%BD%D1%82%D1%83%D1%80%D0%BD%D0%B0%D1%8F+%D0%BA%D0%B0%D1%80%D1%82%D0%B0+%D0%BF%D0%BE+%D0%B3%D0%B5%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D0%B8+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B4%D1%80%D0%BE%D1%84%D0%B0+%D0%B3%D0%B5%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B5+%D0%BF%D0%BE%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D1%80%D0%BE%D1%81%D1%81%D0%B8%D0%B8
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d982.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD982 16792 bytes
font_01_sfnt_off0000f199.bin
6a32ac20465a37b1149dcf941e58b0d911b6c610fb4d0e774c0a0fd11bd03159		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF199 11344 bytes
font_02_sfnt_off00010c0b.bin
833c94d16bde35238c48150221245fd4356681282db85ad7f3f7306ef8039517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C0B 22320 bytes

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