Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28ec47e6367c24…

MALICIOUS

PDF

78.9 KB Created: 2021-10-30 06:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: a71a920fae361e3ed4bf254ad779ca61 SHA-1: 1f8b03e69ae45ad2119f86ed79ff0476df567181 SHA-256: af28ec47e6367c249dcde685153d64c622163f10234ea7e6877d8515edf84248
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 http://hud101.vn/webroot/img/posts/files/19061898006.pdf In PDF document text
    • http://eot.mn/uploads/userfiles/files/27524529734.pdfIn PDF document text
    • http://mjacz.cz/soubory/files/21291999089.pdfIn PDF document text
    • http://fandimnarodaku.cz/upload/file/20256833680.pdfIn PDF document text
    • http://fra2ange.it/userfiles/files/9672678278.pdfIn PDF document text
    • http://daithanhnam.com/upload/files/61281192667.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210921160653.pdfIn PDF document text
    • http://yijianjiance.com/userfiles/file/20211029180737_1691883366.pdfIn PDF document text
    • http://webcertain.net/contentupload/fckeditorUploads/organization_/file/ginepe.pdfIn PDF document text
    • https://kurishupally.org/userfiles/file/wubonefu.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/bipinipozonalisikufixaj.pdfIn PDF document text
    • https://rubi-gahtani.com/userfiles/file/1049740440.pdfIn PDF document text
    • http://dabaizhongxue.com/upload_fck/file/2021-9-15/20210915171033138797.pdfIn PDF document text
    • http://audyt.rowerowaszkola.pl/imgturysta/files/11431207803.pdfIn PDF document text
    • https://linkevicius.com/upload/galery/file/redibudedugozasevolukoxip.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/mijalanus.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/desuralegukirob.pdfIn PDF document text
    • http://master-vin.ru/files/file/30075908300.pdfIn PDF document text
    • http://phongthuyphatloc.com/luutru/files/19611366463.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/15940449848.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/1002339597.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16148cbc084f47---11978497767.pdfIn PDF document text
    • http://pickup-ws.com/userfiles/files/kefeporezenuwi.pdfIn PDF document text
    • http://spbmedax.ru/sites/default/files/uploads/26815136358.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/cmwvf4RlXg4/uplcv?utm_term=how+to+remove+line+in+word+documentPDF 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_off0000d06a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06A 10444 bytes
SHA-256: ce9e438cc80ce5830aa5a351ffc88d25001a953f83d3c76dff940535e0a3e4c8
font_01_sfnt_off0000e80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 17432 bytes
SHA-256: ec22738214e712d86e4801d4ae89c99088b819d6b22117d462c0c127c0b3efbe
font_02_sfnt_off0001158d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.