Malicious PDF — malware analysis report

Static analysis result for SHA-256 edee9d907ccb0d8c…

MALICIOUS

PDF

69.5 KB Created: 2021-10-01 09:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: afeedab6e9537b8113b68980b500e3d8 SHA-1: 692d96d2670510b8bb3803f4a0f4efdac3fa33f9 SHA-256: edee9d907ccb0d8cf2e7f96d557e2f67a1293bcd5897c6774dcb0851349d181c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://ketchas.ru/uplcv?utm_term=6+months+to+6+figures+pdf PDF link annotation
    • http://ptaki.info/imgekoprojekty/files/45442768530.pdfIn PDF document text
    • http://culfordequestriancentre.org/UserFiles/file/dipupusojodiribazu.pdfIn PDF document text
    • https://egc.ecrom.work/syo/files/tivazimabixevetimegemej.pdfIn PDF document text
    • https://xn--b8qxb801j.tw/upload/files/91711075090.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/80148561332.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/tirorade.pdfIn PDF document text
    • https://mimpishio1bet.net/contents/files/51031788490.pdfIn PDF document text
    • http://nanouklid.cz/upload/file/jemamibutejilagakaxadoj.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/25365163095.pdfIn PDF document text
    • https://savitravel.ro/ckfinder/userfiles/files/kewukoposexazoxo.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/14522096727.pdfIn PDF document text
    • http://xinshifm.com/userfiles/file/22466918738.pdfIn PDF document text
    • https://fiscalonline.ro/app/webroot/files/userfiles/files/69365837051.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/xegamujo.pdfIn PDF document text
    • http://esejsc.com/upload/files/71198999409.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/23630652319.pdfIn PDF document text
    • https://fotografski-studio.kost.si/userfiles/file/72096925281.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/40205964363.pdfIn PDF document text
    • http://drzwiukryte.pl/userfiles/file/58119703960.pdfIn PDF document text
    • https://12shio1.com/contents/files/5055057857.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b0d9f394a3---zukadefivele.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/3d0aea5f8e5ba929d1f14b84ec619ccf/guvesukesewibakiteta.pdfIn PDF document text
    • https://vgi-vn.vn/app/webroot/img/files/gafajajububebakedupukuzeb.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ae76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE76 16176 bytes
SHA-256: fc6025994c199859340708179c88057ef9f9f79cb143db0a3e7894eb11927e83
font_01_sfnt_off0000d80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF026 10908 bytes
SHA-256: d4f1ffac87d9b1bf96a26b13835c732d56e6880530fa61643e5646d08db40758

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