Malicious PDF — malware analysis report

Static analysis result for SHA-256 860cfd15148025f8…

MALICIOUS

PDF

80.3 KB Created: 2021-09-20 21:52:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: cb92b9f7c6bcb3eb057b3da5bf5a2e81 SHA-1: f2069ae1eae372a3f910bef5fbeb2ddc393565d0 SHA-256: 860cfd15148025f83dcafefe6aea48a2cfe2de8fb4f9f4e7e89494524220c260
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 http://viral-list-machine.com/ckfinder/userfiles/publics/files/68433841350.pdf In PDF document text
    • https://karolinanowak.com/userfiles/file/70634001523.pdfIn PDF document text
    • http://nt-module.ru/ckfinder/userfiles/files/9123857650.pdfIn PDF document text
    • http://vuoncotichdep.com/upload/files/vajinawirir.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/19270676657.pdfIn PDF document text
    • http://jia-longsofa.com/uploadpic/jialong151126/files/202109020548498930.pdfIn PDF document text
    • http://tubelessons.net/cms_images/file/40461859524.pdfIn PDF document text
    • http://e-baze.lv/images/site/file/66672865232.pdfIn PDF document text
    • http://firsttimehomebuyerstudy.com/images/file/sirulusamemobo.pdfIn PDF document text
    • https://tatvan.in/userfiles/file/bafujusasubuko.pdfIn PDF document text
    • https://armenia4d.com/contents/files/jexopotefugiko.pdfIn PDF document text
    • https://nationalshield-uae.com/userfiles/files/594199698.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/161476c70cd840---54220159294.pdfIn PDF document text
    • https://mysilo.com/upload/ckfinder/files/mojakatepejokijaj.pdfIn PDF document text
    • https://wineart.online/userfiles/file/92480876583.pdfIn PDF document text
    • http://zamgph.com/uploads/file/030751518092.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613c1f70ba9bf---71848380053.pdfIn PDF document text
    • https://gulfsupremesa.com/ckfinder/userfiles/files/22994946133.pdfIn PDF document text
    • https://alicantea.centralcms.cloud/galeria/files/80832507828.pdfIn PDF document text
    • http://timeyear-v.com/userfiles/file/jolezizizutobedi.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/goluzetuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=pokestar+they+evolve+apk+downloadPDF link annotation
    • 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_off0000d3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B6 17820 bytes
SHA-256: 1e71622f18988e170f1d25b314f1a19f87a6d0a46957a7fd6ecf92f3bca40f46
font_01_sfnt_off00010248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 10756 bytes
SHA-256: 5fb25d8a7f2a48a49fc97588162978b90177db84946428d6c65f1865fce90958
font_02_sfnt_off00011b2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B2C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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