Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3862598024171a…

MALICIOUS

PDF

69.4 KB Created: 2021-10-03 08:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 503c2e85c39b68d898eac26d478dc404 SHA-1: d565cd759000441c0149a65198322668aadb77a7 SHA-256: 4e3862598024171ae2193ff6b87f320d10873054f5f047a1f2fb59c425d0ad71
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • 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://tatnhapkhau.com/ckfinder/userfiles/files/gekesixasobubuja.pdf In PDF document text
    • http://gnatowski.pl/attachments/file/63184278852.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1615123dd0d993---97139114304.pdfIn PDF document text
    • http://www.extramas.com/userfiles/files/43542833974.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/56749935362.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/eae8ef2d2fa1d4aa7ab13742c781312c/zugiwenoja.pdfIn PDF document text
    • https://tumujerrusa.com/userfiles/tarurijemulerezirixonij.pdfIn PDF document text
    • http://ckudzcssffhhj.handysociality.com/upload/files/9225825606.pdfIn PDF document text
    • https://dubigroup.com/admin/fckeditor/editor/filemanager/connectors/upload/file/bogojinixuziwaji.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///84666659159.pdfIn PDF document text
    • http://imi.vc/upload/files/furixu.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140f2aa18d4a---80577979669.pdfIn PDF document text
    • https://reha.bg/content/upload/file/tanotawilun.pdfIn PDF document text
    • http://longruiglass.com/ckfinder/userfiles/files/20210914_090506.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/nowagol.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/diximotunos.pdfIn PDF document text
    • http://katachizu.com/img/news/files/21965635440.pdfIn PDF document text
    • https://agatanorek.com/files/file/80265488348.pdfIn PDF document text
    • https://mtestbd.com/assets/uploads/files/93780380317.pdfIn PDF document text
    • http://epmresearch.org/userfiles/files/74143013623.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614036fb63ac5---genawelejawiwefojugito.pdfIn PDF document text
    • http://sieuthibongda.net/ckfinder/userfiles/files/26902608847.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+open+instagram+private+account+postsPDF 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_off0000b0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DE 14780 bytes
SHA-256: 0070cdbce4434dfdf6d1d6aff16580af3f624e7640ffceb3f523771c160b210f
font_01_sfnt_off0000d62f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE46 10916 bytes
SHA-256: 5d5df18f1c1de5ddb10d034de71081b85d0e7501ecd30a7ac1acf80dcc74e81b

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