Malicious PDF — malware analysis report

Static analysis result for SHA-256 258c4b269d940b73…

MALICIOUS

PDF

251.7 KB Created: 2022-02-01 18:53:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 18b5f651a1b1115fde0f78d5f4724e56 SHA-1: 06d64466a2d74a882f3e85b6a5ab94f48d6f49a8 SHA-256: 258c4b269d940b73f770d8ffb35daf05fb351320590bc19c47c5bc3b03b8c53f
172 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7526

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kondicionery-krasnogorsk.ru/upload_picture/file/10805265692.pdf In PDF document text
    • http://www.pzkexie.com/up_files/file/46623713137.pdfIn PDF document text
    • http://lycee-elm.com/userfiles/file/misanuleser.pdfIn PDF document text
    • http://professional-tuner.at/uploaded/file/89978601104.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1616308bc7fcba---65167709666.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/12463051414.pdfIn PDF document text
    • http://motopujcovnateplice.cz/userfiles/file/23594625204.pdfIn PDF document text
    • http://gzperson.com/uploadfile/files/romakituw.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202112111743365655.pdfIn PDF document text
    • http://www.pavimentosyreformasferlu.es/ckfinder/userfiles/files/sebolazadomumikofalinano.pdfIn PDF document text
    • http://www.lircai.com/web/inline/file/96979662078.pdfIn PDF document text
    • http://transchem-tech.com/Uploadfiles/files/54195708323.pdfIn PDF document text
    • http://185.33.116.145/~acus01/upload/files/nibus.pdfPDF link annotation
    • https://stauber.lt/images/files/34107454433.pdfIn PDF document text
    • https://nhahangphongcanh.com/uploads/files/46426839908.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/zegokafobavikugituru.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/bowok.pdfIn PDF document text
    • https://reha.bg/content/upload/file/mufebobegasokokusezelu.pdfIn PDF document text
    • http://kowalstwwo.pl/public/cms/images/file/63110957473.pdfIn PDF document text
    • https://lesviolettes31.kopro.fr/userfiles/file/wopopomisidujamefisavu.pdfIn PDF document text
    • https://nacituran.com/userfiles/file/welepa.pdfIn PDF document text
    • https://marketlayer.com/assets/kcfinder/upload/files/petebipaw.pdfIn PDF document text
    • https://aljuboori.com/userfiles/files/dumuwumaziralajatetafov.pdfIn PDF document text
    • http://elcastillotucentrotextil.com/imagenes/contenido/files/22924538931.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161eac9f3044b2---gejuvexirapikezexapejup.pdfIn PDF document text
    • https://bennex.co.th/assets/kcfinder/upload/files/8766011275.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/68618317492.pdfIn PDF document text
    • http://agriturismolionsfarm.it/userfiles/files/fexudowojezukajudiket.pdfIn PDF document text
    • http://avon-bratislava.com/files/files/fubesozedimogo.pdfIn PDF document text
    • http://dainindo.com/Uploads/userfiles/files/vukopisirafemimunu.pdfIn PDF document text
    • http://printrun.nl/userfiles/files/25678441853.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=unicode+font++for+androidPDF link annotation
    • http://olsztyntransportmedyczny.pl/userfiles/file/29037304550.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_off000384d1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000384d1.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000384d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x384D1 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00039bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39BF1 10260 bytes
SHA-256: 02c0077204a833cb8f8c0230a50f3d06b2a4a1b00d3a85f0e09650bffeb0f65c
font_02_sfnt_off0003b31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B31B 17192 bytes
SHA-256: 66cd2b4b5de981be950f4bf0b5c99ea4415d262b28cafe101ee99736f06ac87d