Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d879b2f9adc0345…

MALICIOUS

PDF

86.5 KB Created: 2021-10-26 15:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 94eb98d20f2677f7ce69d03c094d8eeb SHA-1: 70025fe08e77a0cc339287fefced1617cb12db50 SHA-256: 5d879b2f9adc0345427a5ff13fde46cfb5a68bc853c025231500688baffccb1d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 http://dooroc.com/tk/upload/file/33063684275.pdf In PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20211010202538.pdfIn PDF document text
    • https://equinox-e.com/upload/files/89980159925.pdfIn PDF document text
    • http://www.jacenter.org/js/ckfinder/userfiles/files/75627786979.pdfIn PDF document text
    • https://globalcircle.club/userfiles/file/62848452140.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/lukeporitexixek.pdfIn PDF document text
    • http://feuerwehr-mittenwalde.de/mediathek/files/31080197371.pdfIn PDF document text
    • http://noahmission.org/dataroom/file/9475082171.pdfIn PDF document text
    • http://bakefruit.com/uploads/files/202110170028455458.pdfIn PDF document text
    • http://www.niceresidence.net/image/upload/File/2291100319.pdfIn PDF document text
    • http://3colorjazz.com/fckeditor/userfiles/image/3639556851.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/tutuz.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/sumazaninokenanu.pdfIn PDF document text
    • http://gzpropellers.com/uploadfile/files/70763460264.pdfIn PDF document text
    • https://hijaulumut.com/contents/files/99276678548.pdfIn PDF document text
    • http://bentleyplemtech.ru/userfiles/file/gixamupu.pdfIn PDF document text
    • http://xn--72c7caerxx0d3a9eve.com/UserFiles/File/47344016086.pdfIn PDF document text
    • http://akiisushi.com/uploads/files/26757020543.pdfIn PDF document text
    • http://unleadedcoffee.cz/soubory/tofuli.pdfIn PDF document text
    • http://china-steamboiler.com/d/files/55358610162.pdfIn PDF document text
    • https://deesudcoolingtower.com/userfiles/file/mifezavejarolatazenukes.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/juxilikurone.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/KGDyd8lM0uI/uplcv?utm_term=confusion+of+identityPDF link annotation
    • 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_off0000eb7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7B 19304 bytes
SHA-256: 182f8116345dbe497b270cfad80d2e4072c07df23cf6da79a3b41e3eb89ef195
font_01_sfnt_off00011d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7F 10284 bytes
SHA-256: 7f5c3b9455fd1a90658a0e7122ac5cadc976dcae5d57b0fb16d584756cd85def
font_02_sfnt_off000134dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1