Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c52609f8cd0bea…

MALICIOUS

PDF

82.4 KB Created: 2022-04-07 18:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: bf64f1da98cce7492613358a11d0cbbc SHA-1: b2e6aa4b5e14139a306ff344807dcb653ee6f602 SHA-256: a9c52609f8cd0beaf7f5d8bb554d4fe50bc5877707eaa7a6a4242bcef5dfc56a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://fecuq.co.za/YmrXLWy8?keyword=three%20body%20problem%20book%202 PDF link annotation
    • https://sozazajigosana.weebly.com/uploads/1/3/0/7/130739782/kepexovifig_geligisagixa.pdfIn PDF document text
    • https://www.yukule.com/ToBeDeleted/admin-assets/js/ckeditor_4.6.2_standard/kcfinder/upload/files/zusikikugekubul.pdfIn PDF document text
    • https://nugibunexediga.weebly.com/uploads/1/3/0/7/130740514/1836620.pdfIn PDF document text
    • http://keyflounge.nl/userfiles/file/82455843665.pdfIn PDF document text
    • https://valetakomo.weebly.com/uploads/1/3/4/0/134012509/penomiduzenorudifewo.pdfIn PDF document text
    • http://ttmm.co.jp/ckfinder/userfiles/files/dinutakigumuwurodogo.pdfIn PDF document text
    • https://komidozikozapuf.weebly.com/uploads/1/3/1/4/131455883/75213.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1623b86a4012e1---83808153858.pdfIn PDF document text
    • https://get-cash-get.site/js/ckfinder/userfiles/files/midukatu.pdfIn PDF document text
    • https://fogipomovilop.weebly.com/uploads/1/3/4/0/134018275/2715414.pdfIn PDF document text
    • https://baohohoanglong.com/userfiles/file/wejapedokufobepofevig.pdfIn PDF document text
    • https://soruxepamoni.weebly.com/uploads/1/3/5/9/135992355/monasiwega-guvujuguve.pdfIn PDF document text
    • http://www.museopizarra.com/ckfinder/userfiles/files/93067558994.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/lajesulakem.pdfIn PDF document text
    • http://pjj.aoosung.com/upload/editor/file/mifigowipelevemew.pdfIn PDF document text
    • https://inprovitecuador.com/ckfinder/userfiles/files/24823245278.pdfIn PDF document text
    • http://secoinblock.com/upload/files/xapumobusimatulexopixew.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/92345765582.pdfIn PDF document text
    • http://muratdizayn.com/panel/kcfinder/upload/files/naxaridudidat.pdfIn PDF document text
    • https://danovijo.weebly.com/uploads/1/3/4/7/134774389/3317216.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 extracted file (font_00_sfnt_off0000dbcc.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dbcc.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E3 10460 bytes
SHA-256: c5a0650b157d2077dc3c6c227326b151f6818f7e7bc2d574b64a90622c082316
font_02_sfnt_off00010b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B67 18928 bytes
SHA-256: f1eee145f0f57f0f369f809e85c379bc9d56caa0aa0a3c66a21bf205252cc6dc