Malicious PDF — malware analysis report

Static analysis result for SHA-256 191c60f21b66d7c2…

MALICIOUS

PDF

75.0 KB Created: 2021-09-12 06:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 242a2fba51169831313197c180ae10f9 SHA-1: ed676b789cbf435f8194891e809846570ac84650 SHA-256: 191c60f21b66d7c2c030bab34be3ed7a2ad46b1329e731b03d5d8d8a02f20109
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://insp.biz/img/file/8229723078.pdf In PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132f8141c05c---64401124148.pdfIn PDF document text
    • https://bdata.vn/upload/files/97483785405.pdfIn PDF document text
    • http://tsyrulnikov.ru/upload/file/dusepinipileletifatipup.pdfIn PDF document text
    • http://inteko-tula.ru/f/file/remerajesizoxexuw.pdfIn PDF document text
    • http://chinalabware.ru/d/files/68912502247.pdfIn PDF document text
    • http://alarm.pl/userfiles/file/28987584070.pdfIn PDF document text
    • http://tivati.com/uploads/userfiles/file/80503371147.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/45124019903.pdfIn PDF document text
    • http://vivo-mebel.ru/upload/file/wupanared.pdfIn PDF document text
    • http://shengyaweb.com/uploadfile/file/2021090710474492.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/wujevomutulirilaxuzesix.pdfIn PDF document text
    • http://bkmarine.net/ckfinder/userfiles/files/1630788339.pdfIn PDF document text
    • http://lasermedia.cn/userfiles/file/dawajinumedasapobunida.pdfIn PDF document text
    • http://tk-weld.com/images/library/File/guledurad.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/zaravudomenupepi.pdfIn PDF document text
    • http://baheth24aqari.com/ckfinder/userfiles/files/furetunomagiweguv.pdfIn PDF document text
    • http://speckrepej.com/upload/file/56717765422.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/butasuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=tantan+premium+apk+latest+versionPDF link annotation
    • https://www.posluh.hr/ckfinder/userfiles/files/jurebewededopakosuse.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_off0000bd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD36 10632 bytes
SHA-256: 65046d35e7a145a227f1a03827d348a6e92bd81bfb1d73dcee0bcd163b992ec1
font_01_sfnt_off0000d58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58F 18044 bytes
SHA-256: c57f609a936779511aaa46add35b5dee74eee59aa06f2cb3aaa219bce19d97a5
font_02_sfnt_off000104b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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