Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afa833f77ac55a3…

MALICIOUS

PDF

71.5 KB Created: 2022-04-08 15:14:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ca692e021bbe5ceafa053731708e3f49 SHA-1: fb2575ec72201a96f7191ed0fdfa6ffc13b512fb SHA-256: 4afa833f77ac55a3d65dbd30cf30ff80efb13800cd05456876fe30d1712882af
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://norin.co.za/YmrXLWy8?keyword=how%20to%20lose%20weight%20vegetarian%20meal%20plan PDF link annotation
    • http://matras-devison.ru/upload/file/zemelivomi.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/nixewufexepereruma.pdfIn PDF document text
    • https://jutisopi.weebly.com/uploads/1/3/4/7/134775863/wokilexofi.pdfIn PDF document text
    • https://jojavofeze.weebly.com/uploads/1/3/4/3/134395471/jonopijabakusojugipa.pdfIn PDF document text
    • https://dnmpaint.com/sdcc/images/file/73957168475.pdfIn PDF document text
    • https://nodimawajovuri.weebly.com/uploads/1/3/4/4/134431691/9f63f10f319f.pdfIn PDF document text
    • https://dadomirizetuso.weebly.com/uploads/1/3/4/8/134870225/225d52.pdfIn PDF document text
    • https://bazopozetera.weebly.com/uploads/1/3/1/6/131637116/gibafazenogef_numelod_soletoxefavomip_mupubidaza.pdfIn PDF document text
    • https://vetaneje.weebly.com/uploads/1/3/4/7/134729364/torode-wupakibexilizos-sanugaxifegov-motogamunerara.pdfIn PDF document text
    • https://rizipopene.weebly.com/uploads/1/3/5/3/135316145/wekif.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/1354367751622ba27c3a6cb.pdfIn PDF document text
    • https://fuxesofana.weebly.com/uploads/1/3/4/1/134108907/bisuvoxe-kagen-damen.pdfIn PDF document text
    • https://zirodamabesad.weebly.com/uploads/1/3/0/7/130740068/2782915.pdfIn PDF document text
    • https://tugupititu.weebly.com/uploads/1/3/4/8/134887320/f3390.pdfIn PDF document text
    • http://www.fbs-g.com/kcfinder/upload/files/nixosasofegibubig.pdfIn PDF document text
    • https://giromotazipajid.weebly.com/uploads/1/3/1/3/131384567/2273904.pdfIn PDF document text
    • https://gijenufojuli.weebly.com/uploads/1/3/5/3/135335104/6782508.pdfIn PDF document text
    • https://semuvobe.weebly.com/uploads/1/3/0/9/130969465/a6dd5.pdfIn PDF document text
    • http://xn--j1aai7d.xn--p1ai/userfiles/file/matiwimanuzubedokujodewa.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 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_off0000b1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C8 10844 bytes
SHA-256: a544cbdae3c0795f06d4db47485ed8efbb0cf37abe6bf26448d07844638c297b
font_01_sfnt_off0000caa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA5 17628 bytes
SHA-256: c18ed071cd3bcb209d1273ac726c5c470e750f2d76aecd55417190af67f4633f
font_02_sfnt_off0000f8e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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