Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99f8f3f6ace7d5b…

MALICIOUS

PDF

67.7 KB Created: 2021-11-07 12:31:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: ae3b5fe65efc700578d20ad3ff075394 SHA-1: af5223596f2b42e0b34382920f089234ccc06b95 SHA-256: f99f8f3f6ace7d5b1860544a99151eafb6713f3a60d2c0cec5e1921c56028873
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://ketchas.ru/uplcv?utm_term=domain+and+range+with+interval+notation PDF link annotation
    • http://huarong-bio.com/upload/files/raluwubusesekugegot.pdfIn PDF document text
    • http://pololanna.com/user_img/files/kabodofanuzefudotup.pdfIn PDF document text
    • http://eperon-kochersberg.com/img_db/9383606265.pdfIn PDF document text
    • http://wronba.com/uploads/wysiwyg/file/985025100.pdfIn PDF document text
    • http://kingsfci.com/userfiles/file/34517752573.pdfIn PDF document text
    • http://fgsconsulta.com.br/ckfinder/uploads/userfiles/files/6186644792.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/33277017397.pdfIn PDF document text
    • http://vanharteyoga.nl/uploads/files/20360845186.pdfIn PDF document text
    • https://lederstuehle-shop.de/ckfinder/userfiles/files/12568940235.pdfIn PDF document text
    • http://koreanhotpot.com/uploads/files/vojotoginupa.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/53873253604.pdfIn PDF document text
    • http://planao.com/ckfinder/userfiles/files/kokuwigerefiranoli.pdfIn PDF document text
    • http://dautuck.com/uploads/userfiles/file/31884504754.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/61663028346.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/43966503355.pdfIn PDF document text
    • http://munnarteabungalows.com/userfiles/file/pufagepikesiromekoro.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/83947ed1e38ee121d60cbb41b2500fbb/dugalixave.pdfIn PDF document text
    • http://reclameindex.nl/images/uploads/ludofofokemus.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/55527925460.pdfIn PDF document text
    • https://zohopinler.com/calisma2/files/uploads/41209935316.pdfIn PDF document text
    • http://qdsenfeng.com/data/files/zewit.pdfIn PDF document text
    • http://cokhihoaiduc.com/uploads/files/pilit.pdfIn PDF document text
    • http://zajazd-broadway.pl/galeria/file/makeputatasogar.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_off0000a27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA27B 10680 bytes
SHA-256: d55095fbabd5263ef63d1a1998f1f96f37afde6933d7e9504ac70e6af5d14680
font_01_sfnt_off0000ba8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA8F 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off0000d1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B0 18064 bytes
SHA-256: 5ae1e1b6465678dc7b4df78fa87cfce88ea90b088613e59258b4f8885bb342b3

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