Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9990da9ce615aa0…

MALICIOUS

PDF

82.6 KB Created: 2021-09-13 15:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 1ef77e5e104cee42d2fd70b0513d1415 SHA-1: 47dd6f6447dbb37af53c0fc5c205580cd65f89d8 SHA-256: f9990da9ce615aa0bb42fc490cfb645a67f5973f4567638161f96c7370533afc
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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.
  • 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://noithatphathuy.com/Images_upload/files/nusefudobopen.pdf In PDF document text
    • http://tiendanatacion.com/noticias/files/piwes.pdfIn PDF document text
    • https://ms02bet.com/contents/files/jijezokokixizuv.pdfIn PDF document text
    • https://agronlogistics.com/userfiles/files/82359246042.pdfIn PDF document text
    • http://ulv-fogger.es/d/files/7097565646.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1df35d883---newafixepupa.pdfIn PDF document text
    • http://yarpb.ru/pic/userfile/22168261366.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135eb3254c4b---63782085198.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/nezufuroladuzut.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1612f1bee91f21---poxikosobodetud.pdfIn PDF document text
    • https://next-engineering.com/userfiles/files/zupogodutafodam.pdfIn PDF document text
    • http://ytlcases.com/userfiles/file/zavesigedowazuzaxunuv.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/04afuci5i5b5eqil79avuh5sj0/60654406618.pdfIn PDF document text
    • https://www.cdsale.org.au/application/third_party/ckfinder/userfiles/files/66361042951.pdfIn PDF document text
    • http://samtekelektrik.com/files/tobex.pdfIn PDF document text
    • http://digitalpolicycouncil.org/imagenes/file/fajugoruzek.pdfIn PDF document text
    • http://spbmedaks.ru/sites/default/files/uploads/todalimipadiwogadekil.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/titunujabawafu.pdfIn PDF document text
    • http://hurtowniagrafit.pl/userfiles/file/24930438683.pdfIn PDF document text
    • http://keifo.ru/ckfinder/userfiles/files/15902252919.pdfIn PDF document text
    • https://renteci.com/imagens/file/39895507058.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=aplikasi+tambah+musik+di+videoPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD490 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 17844 bytes
SHA-256: 77abd3f77dc9a98b97d263bd4a3b366166a88ebe5039a8e4c73a048ee73d262f
font_02_sfnt_off00011982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11982 10832 bytes
SHA-256: af1dc571baa3af5fc45bbb98322667057f8593cccd8b1f07618cc12a66de7a25
font_03_sfnt_off0001324e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324E 2296 bytes
SHA-256: 7df7fa2e82cc03cc78273e3ae6ee1528e6bad376c331a052362e43ffef5c6963

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