Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6a2587b611723f…

MALICIOUS

PDF

75.9 KB Created: 2021-11-18 06:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: be630fffa26c666469f5feabca934ff3 SHA-1: 59582f840de3ba89b808c9aed7ad4a447c773445 SHA-256: 2b6a2587b611723f40a443e80979c78f0afabc8a45235ea37376ceb3913f69ec
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://bigbulkbags.com/survey/userfiles/files/5544642270.pdf In PDF document text
    • http://sonet.vn/uploads/images/files/vefodezeb.pdfIn PDF document text
    • http://vibrobeton.by/pics/files/58088736280.pdfIn PDF document text
    • https://fobh.net/userfiles/files/budekumizezodibuwa.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/garenejikefumugime.pdfIn PDF document text
    • http://lica-mpt.it/userfiles/files/36644171952.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1618d07ef92ddd---36261037592.pdfIn PDF document text
    • https://www.nbc.com.vn/ckfinder/userfiles/files/tezis.pdfIn PDF document text
    • https://onutglen.com/caningest/images/file/werirafaz.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/geseferig.pdfIn PDF document text
    • http://mycoapaisyl.com/webimages/files/10928946776.pdfIn PDF document text
    • http://tofuyatogo.com/uploads/files/zemilavenow.pdfIn PDF document text
    • http://tiquital.com/documentos/file/5228333616.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/42564305673.pdfIn PDF document text
    • https://ezsprinting.com/userfiles/file/wewukowedilewilat.pdfIn PDF document text
    • http://goldendazzle.com/upload/quangtri/files/tatekagopezubarajusupid.pdfIn PDF document text
    • http://aedjtj.pretty-match.com/upload/files/girujisesipetidakejese.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/rivujoxuliporubuzomuw.pdfIn PDF document text
    • http://chinastom.ru/userfiles/file/pegugidakinojifarobafim.pdfIn PDF document text
    • http://yung-shun.com/userfiles/file/69671204217.pdfIn PDF document text
    • http://bak.vn/upload/files/ligojixegugibumus.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/40263620371.pdfIn PDF document text
    • https://kalafiber.com/webroot/js/ckfinder/userfiles/files/rikofefi.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/25694466020.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/u-9XGpgKpwY/uplcv?utm_term=speech+marks+after+full+stopPDF 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_off0000c555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC555 16924 bytes
SHA-256: 895d446d7ef031891c46372353e15598871e2d100f756351c7f33c9ddddfe6c4
font_01_sfnt_off0000f165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF165 16540 bytes
SHA-256: 45015263e28dbf00792e0fa83ae0fb9123af5110209f191c00797c49350166ef
font_02_sfnt_off0001088b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088B 10816 bytes
SHA-256: 4bcce14e3c64acab0b641b91306bb0e3bf09ba07dd5d68318b68e2675cdd562a

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