Malicious PDF — malware analysis report

Static analysis result for SHA-256 01badfb5cf1b8541…

MALICIOUS

PDF

77.5 KB Created: 2021-08-25 19:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 18784a2812be39b11b6fa12a544848d0 SHA-1: b7f1174e4a45416da2db736e0f592f8bdf4564ea SHA-256: 01badfb5cf1b85412df959ebcb53aabb4526de115c63912ccf2d342be1b3f7de
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which are hosted on disposable or potentially compromised CMS upload storage. These links likely serve as a link farm to redirect users to malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8598

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://puppometalli.eu/file/fadawizoposidosulo.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070027d70f2b---kijowemamovofuvomizaz.pdf
    • https://hgb.se/filer/file/botonigefikusu.pdf
    • http://duetsepolno.pl/userfiles/file/92268133815.pdf
    • http://walkercombsfamilyreunion.com/clients/d/df/dfd517ab040340b2551da60fba195f5f/File/goxunirozufob.pdf
    • https://transport.frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/1400225924.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/qk94qgm3pfeog83h2vn69793c6/sobutinopeduvezokaxako.pdf
    • http://huucodatlanh.com/userfiles/file/37532812348.pdf
    • https://alirezamirmohammadi.com/images/upload/files/relob.pdf
    • https://nanyangtextile.com/userfiles/file/foxaxuxifuzuxazes.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119b205483b9---lazazak.pdf
    • http://trustarshida.co/cache/fck_files/file/loduvubosafumow.pdf
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/2d0f84f36c2b65a93f15609b100ad9d4/lipoxajofuvagibibotojit.pdf
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16088bf46cd186---jalapiliromogutedafili.pdf
    • http://ezibra.pl/upload//file/5607306224.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160b363740ee03---78548088792.pdf
    • https://envida-nieuws.nl/bsb_website/upload_fck/file/zadixuxuvedagejozunex.pdf
    • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/nozused.pdf
    • https://bladmedyczny24.pl/wp-content/plugins/super-forms/uploads/php/files/419d74c7c80962962870ec64918c2ef6/12830408912.pdf
    • https://autotrans911.com/thread/admin/uploads/file/jegevalazunev.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/eb2a4c007f08e219fe371d67b3447e04/kurogivituto.pdf
    • http://usaoxin.com/userfiles/2021-5/file/sezuwixebuvefegisago.pdf
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160c86b903a245---xagefavolebeben.pdf
    • http://turinhotelcompany.com/userfiles/files/pebiwasariroku.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=explain+the+objectives+of+pricing
    • 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_off0000fc58.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC58 16792 bytes
font_01_sfnt_off0001146f.bin
174c6ac4f530428d4e21e629310498a60083634cb6508ec09fe695cb8f3ffd4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1146F 11180 bytes

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