Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3c912946116d7b…

MALICIOUS

PDF

82.8 KB Created: 2021-09-08 16:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: ce3b8d6098bc30a03252e68ca047d16c SHA-1: 63870f9e6a09a032e17a330f97f6ebbc1af0c914 SHA-256: 4e3c912946116d7b017db9b4f92f29b10a5a048d2e2fbefabadf05b3965f7370
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 https://crewmak.ru/uplcv?utm_term=dengue+ministerio+da+saude+pdf+2017 PDF link annotation
    • http://saimiri.name/upload/file/gafiregu.pdfIn PDF document text
    • http://yossy.biz/userfiles/file/rafuvibulisomajuvu.pdfIn PDF document text
    • https://hatinhjobs.com/upload/files/8980403973.pdfIn PDF document text
    • http://aa-nusd.jp/80840071068.pdfIn PDF document text
    • http://syarmarka.ru/userfiles/files/49372545508.pdfIn PDF document text
    • https://cheeselicious.net/UserFiles/file/69652962595.pdfIn PDF document text
    • https://eirai.org/editor/ckfinder/userfiles/files/xefel.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/64544481518.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/5812af63a35783c0b7ec6b2e423f77da/17866680931.pdfIn PDF document text
    • https://betsin.org/userfiles/files/kumiloxokogevoverobus.pdfIn PDF document text
    • https://gogreenonline.net/userfiles/image/fckeditor/file/jawinikoruxirinowaripilu.pdfIn PDF document text
    • http://okfilm.kr/userData/board/file/73103462413.pdfIn PDF document text
    • https://pcetravel.com/files/file/26989203938.pdfIn PDF document text
    • http://carsonpokebar.com/uploads/files/muvabidaloxoxodogekaj.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136338a217ad---32750259252.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/rebekudigalapu.pdfIn PDF document text
    • http://dobermanncz.eu/files/gugipimexumixoru.pdfIn PDF document text
    • http://www.bosingels.nl/ckfinder/userfiles/files/bepanusurutun.pdfIn PDF document text
    • https://birudongker.com/contents/files/feruzapixakewexifas.pdfIn PDF document text
    • https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/nutax.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__612F26689802F.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/pofojuwomenesi.pdfIn PDF document text
    • https://hv2barrier.com/application/third_party/ckfinder/userfiles/files/nakobiwuwema.pdfIn PDF document text
    • http://jn-zhsc.com/upload/23818180332.pdfIn PDF document text
    • https://t2sc.me/userfiles/84553218612.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_off0000d831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD831 19712 bytes
SHA-256: f55a29a61560674754ae2b26c16d83dfe31878113ec2a2a8b9575becb18c9233
font_01_sfnt_off00010af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12310 11240 bytes
SHA-256: efb28ac671bf544bb3817fa98941e582d103e331651561aa5c0ecd18ac0c9fd5

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