Malicious PDF — malware analysis report

Static analysis result for SHA-256 3312e0976ba45f96…

MALICIOUS

PDF

84.6 KB Created: 2021-09-21 15:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: eef788996a60e2354fe265d9a4c8c43e SHA-1: 70347b20756b8de8a9b05f10ab7a6e8abf1313b6 SHA-256: 3312e0976ba45f96aa6290e9225e6a07e1fb939447010924f08b968d2d8164a7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical ClamAV heuristic identified this PDF as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', indicating a phishing or trojan payload. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests the document is a link farm hosted on disposable domains, likely to obscure the true malicious destination. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3407

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://chongthamphucthang.com/images/news/files/gutibesenujoluwafoxi.pdf
    • https://mptradingcompany.com/userfiles/file/kulugavogifajawitarobe.pdf
    • https://olivier-daulte.com/ckfinder/userfiles/files/56873816946.pdf
    • http://lemma-studio.pl/userfiles/file/vakebuno.pdf
    • https://wedding-photos.cz/userfiles/file/92566593791.pdf
    • https://miraclechuppahs.com/userfiles/file/tovovo.pdf
    • https://e-motorcycle.tw/upload/emotorcycle/files/9931241033.pdf
    • http://uniondrygoods.com/fckeditor/userfiles/file/92686221647.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/6430442ce9987d41390d4aefcb1a3b0c/wuxivoxivigijo.pdf
    • http://abwsalisbury.com/uploads/files/duruxemopulolemibedunajoj.pdf
    • https://www.gurgy.net/ckfinder/userfiles/files/fadebabefisaw.pdf
    • http://dongshengcable.com/images/upload/File/67966367652.pdf
    • http://kkagro.com/media/images/upload/file/38693852150.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614753d1df1d2---kosefotagomulo.pdf
    • http://jysfh.com/upload_fck/file/2021-9-17/20210917210018616942.pdf
    • http://favourtec.com/attachment/file/xovibose.pdf
    • https://mobiligennari.com/userfiles/file/57212254694.pdf
    • http://sudeoksa.net/userfiles/file/20210920225012.pdf
    • https://aahs.givingplan.net/sites/default/files/editor/file/ganojanawede.pdf
    • http://dataction.org/demo/dataction/media/wawutuzivo.pdf
    • http://eau-msu.ru/ckfinder/userfiles/files/nijasopipuzatu.pdf
    • http://smarttechsolutionukltd.com/uploaded_files/userfiles/files/kesujoxiralokoximixonobig.pdf
    • https://ontech.vn/images/ckeditor/files/taderemufunob.pdf
    • https://ccaquebec.com/userupload/files/naxaxupidotetonuxezijon.pdf
    • https://sankaibearing.com/userfiles/files/surififofa.pdf
    • http://j-club.eu/userfiles/file/suravelulufuxoxetili.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=one+piece+eng+dub+online
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010fea.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEA 16792 bytes
font_01_sfnt_off000127fc.bin
ee8fbcfc2dbcfb9ae196f6ec595aa81ec6baa760da2a394f10bf8df9d663abb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127FC 17648 bytes

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