Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd2d262acc37d324…

MALICIOUS

PDF

69.2 KB Created: 2021-09-26 08:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: bbc62c1b6c89b78f7faebdfc672c5f59 SHA-1: dc81e6e44c17b618a68eeee4f1fdc22e33485a53 SHA-256: fd2d262acc37d3248fa16b3f83f29a5c86bdc1387d7e93207b8dab8e4ee11b43
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware delivery mechanism. It contains embedded JavaScript, which is often used to exploit vulnerabilities or redirect users. Furthermore, it includes numerous links pointing to compromised WordPress sites, suggesting an attempt to host malicious content or redirect to phishing pages. The presence of these elements indicates a multi-stage attack, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4539

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://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/161339d83326d7---zebaduxapisil.pdf In PDF document text
    • https://k-barrierfree.com/FileData/ckfinder/files/20210923_3D58E80C0AB87949.pdfIn PDF document text
    • https://jnnjhansi.com/userfiles/file/1953557606.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/madematalavibuposo.pdfIn PDF document text
    • http://daonshop.com/files/fckeditor/file/93025783165.pdfIn PDF document text
    • http://trip-sale.ru/userfiles/file/89911754590.pdfIn PDF document text
    • http://yameitecl.com/ckfinder/userfiles/files/20210926_054905.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/guponelamimugu.pdfIn PDF document text
    • https://ottopianos.nl/files/13551967535.pdfIn PDF document text
    • https://akemi.ro/hirek/file/vatopizoxolinel.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fd248679d4---99309812310.pdfIn PDF document text
    • http://www.vnv.nu/admin/library/ckfinder/userfiles/files/67076580205.pdfIn PDF document text
    • https://hunglivet.com/uploads/files/202109231812012919.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141aa6319328---vonujusununekesog.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/lilijik.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9ded3a495---41436401379.pdfIn PDF document text
    • http://plnjl.com/userfiles/files/jopuraxiner.pdfIn PDF document text
    • https://decoveinvestment.com/userfiles/file/74880600939.pdfIn PDF document text
    • https://anitt.in/ckfinder/userfiles/files/26571887487.pdfIn PDF document text
    • http://twtqedu.com/userData/ebizro_board/file/60478214611.pdfIn PDF document text
    • http://otworz-biuro-podrozy.pl/userfiles/file/rabebibumiwoduli.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/mak878sgnf9kg6rm6jfipbl6a4/gosutepo.pdfIn PDF document text
    • http://coniperfumes.cl/js/ckfinder/userfiles/files/ginuxijagavisaxuvapuzudef.pdfIn PDF document text
    • https://sunsetlearningcenter.com/userfiles/file/teredetogerorikekofotuxex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=epub+to+pdf+converter+software+for+windows+10PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F2 11116 bytes
SHA-256: 4aee0a5cb796397aec2bd2cb8d2e9a8988420bbb2e9132b67dd1d10bdb367ac1

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