Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24c965277aa5247…

MALICIOUS

PDF

71.5 KB Created: 2021-09-25 07:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3ea51b743afb58d767c53abb48d03d49 SHA-1: 33d6084cef67ccf767a67080ff1b699e563f09b4 SHA-256: f24c965277aa5247e3ffdca786724ae2be33dcb48d0efbd843614bf82a593035
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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 https://drafthe.ru/uplcv?utm_term=remote+control+apk+download
    • https://burgaseguros.com/userfiles/file/nozodidateganudunofa.pdf
    • https://ahl2005.com/ckfinder/userfiles/files/16988656563.pdf
    • https://metrosecuritynepal.com/assets/userfiles/files/93456806393.pdf
    • http://floral-design-lindgens.de/userfiles/file/nokesexasop.pdf
    • http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/dafaviwomunowaxesuzem.pdf
    • http://php-lounge.de/userfiles/file/baposafepovasuleg.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161365a55f3be5---8833377346.pdf
    • http://gocep.org/data/userfiles/files/59449199676.pdf
    • http://recrute.fr/files/files/tufulitabomanafupe.pdf
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/04c2mq5cjovvurcue1frbppsi2/fukexuxe.pdf
    • http://zatacorp.com/upload/files/vuzowe.pdf
    • http://springgalleryng.com/Images_upload/files/kiworavevipawu.pdf
    • http://honmamon-s.com/img_seminar/userfiles/file/palixuvarumutaximodisifej.pdf
    • https://haruhonpo.com/upload/haruhonpo/files/59726777787.pdf
    • http://benrassam.com/uploads/files/4050955236.pdf
    • http://metall-press.ru/files/8425704875.pdf
    • http://tieuhocsongphuong.hoaiduc.edu.vn/ckfinder/userfiles/files/xugivizo.pdf
    • http://studiomarcheluzzo.it/userfiles/files/47944625748.pdf
    • http://jinruily.com/UploadFile/file/20210917155119387.pdf
    • https://georeno.ca/userfiles/files/beluvoninodotu.pdf
    • https://dom4m.com/userfiles/files/68396329149.pdf
    • http://margheritango.it/userfiles/file/wipipezosunilejeg.pdf
    • 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_off0000b2f1.bin
62dbdbe205760f074a862b749e2bf65ac2998a437b8da672aa8d91e78f0f9871		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2F1 17376 bytes
font_01_sfnt_off0000df98.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF98 16792 bytes
font_02_sfnt_off0000f7af.bin
132bfd931efe35f82181e299ff5b9e4ddd6da0f49c7c2ccce3c8024fda2bcce9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AF 10640 bytes

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