Malicious PDF — malware analysis report

Static analysis result for SHA-256 441a13ca1e1bccef…

MALICIOUS

PDF

98.3 KB Created: 2022-04-11 22:37:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 8276e347c98a2ddc59805b1bee4a2b14 SHA-1: b939ea28c287587d5caf482dcc165f52b03455bc SHA-256: 441a13ca1e1bcceffb1915b9e43362a69f2bc6cc7db2859763a2231141c5ebe3
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://yoyep.co.za/YmrXLWy8?keyword=the%20language%20of%20composition%20teacher PDF link annotation
    • http://tbeaindia.com/userfiles/file/15875929599.pdfIn PDF document text
    • https://boleto.serveragbr.com/datamont/userfiles/file/julil.pdfIn PDF document text
    • https://esofagopisa.it/userfiles/file/70062157107.pdfIn PDF document text
    • https://jopizogado.weebly.com/uploads/1/3/4/3/134317888/7497414.pdfIn PDF document text
    • https://wonumizesux.weebly.com/uploads/1/3/4/6/134631676/figevizawewonafuba.pdfIn PDF document text
    • https://vuledojovux.weebly.com/uploads/1/3/5/9/135962602/0a77b.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/memovosiwawakejajuwamo.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/49i5ukflvk3s4jl877pfag04qk/15333853948.pdfIn PDF document text
    • https://legalages.weebly.com/uploads/1/3/4/4/134442537/6cc36413c5ae.pdfIn PDF document text
    • https://buwotudotep.weebly.com/uploads/1/3/1/6/131606539/bezonafafajidub.pdfIn PDF document text
    • http://vet-arrighicolangelicristilli.eu/userfiles/files/timoxutawazufabenoseroz.pdfIn PDF document text
    • http://letnipohar.cz/upload/file/mixigaxelis.pdfIn PDF document text
    • https://lejawoxaniw.weebly.com/uploads/1/3/0/7/130738778/temim.pdfIn PDF document text
    • https://tubemugipowiw.weebly.com/uploads/1/3/4/3/134345788/3899103.pdfIn PDF document text
    • http://grupafurman.pl/!mag2011/userfiles/file/792398715.pdfIn PDF document text
    • http://suspensionestg.mx/userfiles/file/53990702130.pdfIn PDF document text
    • https://nixemuro.weebly.com/uploads/1/3/5/2/135299514/bc5ed81db713.pdfIn PDF document text
    • https://lorrainezammit.com/files/file/61192532601.pdfIn PDF document text
    • http://jyy.jp/ckfinder/userfiles/files/20220308_093417.pdfIn PDF document text
    • https://fedico.ca/upload/editor/file/tofalarowege.pdfIn PDF document text
    • https://rumeravovavupol.weebly.com/uploads/1/3/4/6/134619367/ligekitu_fexoxijir.pdfIn PDF document text
    • https://kulilopoxi.weebly.com/uploads/1/3/4/3/134375859/tijulosabu.pdfIn PDF document text
    • http://ridonhennet.eu/admin/kcfinder/upload/files/zawogitusunogamugipatutep.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 extracted file (font_00_sfnt_off00011768.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011768.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11768 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7A 18480 bytes
SHA-256: b31d537d595c64444974625625e7b63ac48191ad0bcd162d23cdb6e563a2880e
font_02_sfnt_off00015efd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EFD 11232 bytes
SHA-256: 447e0cfdcfff05b3ceef4344ac15b55be8385e3fdb7c2f2d80b9139210485a99

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