Malicious PDF — malware analysis report

Static analysis result for SHA-256 af249e55786b829e…

MALICIOUS

PDF

68.7 KB Created: 2021-10-02 19:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 72694a1a2cdd40a03880d3446a9eeb54 SHA-1: 7c627077b96e5fc1bf6b95b869fda279f456d504 SHA-256: af249e55786b829eb2d11a9dce81e149d54598d63bcbb20fbac39e9f5499a55b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://emailreceptionist.net/userfiles/file/56257109780.pdf In PDF document text
    • https://chsins.tw/uploads/files/202109161227356097.pdfIn PDF document text
    • https://thietbixaydungcantho.com/canthomobile2/public/images/sanpham/files/fulagabuwiwazuwuganuxizi.pdfIn PDF document text
    • http://phunphu.com/userfiles/file/mavazinigoras.pdfIn PDF document text
    • http://qianxish.com/ckfind_image/files/29191263530.pdfIn PDF document text
    • https://henseltech.cz/userfiles/file/15706350890.pdfIn PDF document text
    • http://fujiya-burbank.com/uploads/files/nuwukevorusi.pdfIn PDF document text
    • https://wfbulgaria.com/uploads/wysiwyg/files/81708295054.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/99950968641.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/46032627738.pdfIn PDF document text
    • https://sleepthai.com/piceditor/file/78705063967.pdfIn PDF document text
    • http://s2ipower.com/survey/userfiles/files/64589288330.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/35395843561.pdfIn PDF document text
    • https://pt-olympus.com/contents/files/jaxijiwuluporowowirobej.pdfIn PDF document text
    • https://libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/jeraforozuv.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/16195635297.pdfIn PDF document text
    • https://guclupin.com/calisma2/files/uploads/18611763995.pdfIn PDF document text
    • http://piazzademarini3ge.com/userfiles/files/78871474218.pdfIn PDF document text
    • https://alident.centralcms.cloud/galeria/files/jorinugovepupejev.pdfIn PDF document text
    • https://nichecnk.leaddeehub.com/userfiles/files/8175736208.pdfIn PDF document text
    • http://duef.ru/public/file/70160641572.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/73953151473.pdfIn PDF document text
    • http://htk2.altrodesign.eu/ckfinder/userfiles/files/94356495950.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/60891979713.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=what+has+hands+but+cannot+clap+riddle+answerPDF 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_off0000ae8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC69E 14896 bytes
SHA-256: 7d116823ad06d538cb3ecdeb21ba51a2ce22db21ec989ddc22cb4c5e3e2e02ba
font_02_sfnt_off0000ebf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF2 10928 bytes
SHA-256: b6786050ebb276ce1ff8ed12e0a6df4148e6eac2d21b353c665a2e722e6075ce

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