Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87a285bce89b7c7…

MALICIOUS

PDF

72.4 KB Created: 2022-04-11 18:34:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 1864565dbb9cdce5091fb46e31d29a47 SHA-1: 924de16f03fb9140b4a00f87d304d7e7e5525f37 SHA-256: f87a285bce89b7c78915b6729d97bf9ce87446992b5fa8c871872723c8539748
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://mifuj.co.za/YmrXLWy8?keyword=how%20to%20soft%20reset%20a50 PDF link annotation
    • http://box8websites.com/ckfinder/userfiles/files/74873842386.pdfIn PDF document text
    • http://yachtandtrade.com/files/92435569023.pdfIn PDF document text
    • https://velupilarase.weebly.com/uploads/1/3/5/3/135341581/fanat.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16220150704cf1---belixowamekelad.pdfIn PDF document text
    • http://www.avtoschool71.ru/kcfinder/upload/files/zufunodoritizege.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16240a471b3a38---35906395015.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/79418317646.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/dabuvijodagizajofilibal.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/99394707488.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/488a7d66bd13e120dd7242309c7d6940/40629872351.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/15676826846.pdfIn PDF document text
    • https://eurodens.pl/files/editor/files/21735534289.pdfIn PDF document text
    • http://agppi99.pretty-match.com/upload/files/gemutaxol.pdfIn PDF document text
    • https://zubalisi.weebly.com/uploads/1/4/1/4/141427581/lezuvuvex.pdfIn PDF document text
    • https://pukegivox.weebly.com/uploads/1/3/1/8/131856392/norinemoparo.pdfIn PDF document text
    • https://mytshirtcreator.com/app/webroot/files/file/66949769592.pdfIn PDF document text
    • https://isleo.com/i_photos/file/rojofemu.pdfIn PDF document text
    • http://elmbys.se/kcfinder/upload/files/jubera.pdfIn PDF document text
    • https://phr4u.com/files/66390585473.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fe1cd0eaaf4---nolasesomusularukakubew.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_off0000b969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB969 16664 bytes
SHA-256: a20fe92170e9760b8b5e41c736c2c68dfb4f4f115edfb93ca8a9230b532a5608
font_01_sfnt_off0000e4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE4 10296 bytes
SHA-256: 1ebf27fe53dfd37f8877f29c04a6cabc3676a541da1d9ce228360a76ed935276

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