Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddfbe071ebc04da…

MALICIOUS

PDF

85.8 KB Created: 2021-10-11 17:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 1135198f38da3d8fc469a30932c294de SHA-1: 0cfbbcae12b72e9cffe6631537285d24a13fbfd9 SHA-256: 3ddfbe071ebc04dacc3b0c003ffe32f14855f353133a618e796948c1e5f01038
74 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=happy+belated+birthday+for+a+friend PDF link annotation
    • http://2sisaccount.com/userfiles/files/kerajoxipotutenufomi.pdfIn PDF document text
    • http://eldorautomaticgates.com/UserFiles/file/1207810012.pdfIn PDF document text
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/51386632458.pdfIn PDF document text
    • http://titibbs.xyz/js/ckfinder/userfiles/files/wozagivifulu.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20211008_072145.pdfIn PDF document text
    • https://e-uchebnici.com/img/file/39105387881.pdfIn PDF document text
    • https://theshamrockpublecco.it/file/jojuvalukiweranaremogase.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/mitejatera.pdfIn PDF document text
    • http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/14509636092.pdfIn PDF document text
    • http://weilandvloeren.nl/fckimages/48688625695.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/fenifibagudugose.pdfIn PDF document text
    • http://www.chiringuitomediterraneo.com/ckfinder/userfiles/files/ramutunokudom.pdfIn PDF document text
    • http://www.groupementpecheduloir.com/ckfinder/userfiles/files/48920198261.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/11477643194.pdfIn PDF document text
    • http://unstitchedfootwear.net/files/file/58526909441.pdfIn PDF document text
    • http://ff-engineering.com/userfiles/files/668301365.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e939071aa3---35805274181.pdfIn PDF document text
    • https://panelshock.com/userfiles/file/88360152558.pdfIn PDF document text
    • http://sk-uralstroy.ru/uploads/files/rutonigukuwewixageni.pdfIn PDF document text
    • https://giant-nano.com/app/webroot/userfiles/files/zajipivogarivutotu.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/72476721728.pdfIn PDF document text
    • http://zenithmetals.com/files/wetapisozelomegoz.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///bokixatanidixebujesawerum.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_off0000eb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4D 17732 bytes
SHA-256: 06ebe244b61fbda942adf02f3af68e5a2895a03bd7084a5a2e0d40265dc56bc8
font_01_sfnt_off00011956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11956 10672 bytes
SHA-256: 74d9bce57df971befcaadbcf7b401f56acd6da9876bf9cce31a36792f47b1572
font_02_sfnt_off0001316e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1316E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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