Malicious PDF — malware analysis report

Static analysis result for SHA-256 191fba4eba90ff24…

MALICIOUS

PDF

146.0 KB Created: 2022-02-09 15:19:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 95c662e0c40a666ac03a8b42ca5f4a37 SHA-1: 61a3d864f828189123d9f406be8f11fd0d19259a SHA-256: 191fba4eba90ff24cb013060e3785626ff8c96ed0faa63d34fcad1d3570ece9e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 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://loheb.co.za/XSRYdR1H?utm_term=correct+answer+tradutor PDF link annotation
    • http://rosabaum.de/web/editor/files/siworawarijo.pdfIn PDF document text
    • http://friend5190.xyz/js/ckfinder/userfiles/files/sabazebigisiligukovugebet.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1614b1c9406aae---17872792177.pdfIn PDF document text
    • http://szigetkoz-vizitura.hu/admin/kcfinder/upload/files/kevetidenorelilu.pdfIn PDF document text
    • http://probeg2000.ru/files/userfiles/files/15504182525.pdfIn PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/tupifitozavelo.pdfIn PDF document text
    • http://atanasijornet.net/uploads/ckfinder/files/losofafuxekenagove.pdfIn PDF document text
    • http://piscesappliances.com/userfiles/file/vukofodaxirura.pdfIn PDF document text
    • http://rent-lease-no1.com/userfiles/file/20211114043317.pdfIn PDF document text
    • http://www.sloepverhuur-debiesbosch.nl/upload/files/68282272801.pdfIn PDF document text
    • http://chongros.com/userData/board/file/numuka.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/jejuvazugizu.pdfIn PDF document text
    • http://herborgthailand.com/file_media/file_image/file/bikofufefedu.pdfIn PDF document text
    • https://hosrem.org.vn/ckfinder/userfiles/files/56323929869.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/52465411617.pdfIn PDF document text
    • https://tsolisp.com/files/file/tinegoxunexovitoxafekag.pdfIn PDF document text
    • https://igraonica.me/userfiles/file/96549626219.pdfIn PDF document text
    • http://hosma.net/upload/files/61249427290.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/161a0610f19009---34347403943.pdfIn PDF document text
    • http://prestopc.it/upload/file/joruvejedoxekefewenif.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_off0001da9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA9A 18272 bytes
SHA-256: 7853bef4d7c3fdb90be8c8632a72482b74229b1392debcd089a698ef59b40a22
font_01_sfnt_off000209a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x209A8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off000220c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x220C8 10444 bytes
SHA-256: 804870134df48825ed579614c540dfa9229c0c03d88ed34c8b3591aa7a76ea54