Malicious PDF — malware analysis report

Static analysis result for SHA-256 4877bc5b51c09952…

MALICIOUS

PDF

79.8 KB Created: 2022-04-01 04:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-22
MD5: 3c14715f2efd2c0ce4d9de2faa3ca0cd SHA-1: 201198761fa27162a3ab4844d17c3eaa99c01cf2 SHA-256: 4877bc5b51c09952eda1c689365f7cbf4654d566cbe5481c832488f910e8eee0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 6

  • 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 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://kakabotosor.weebly.com/uploads/1/3/0/7/130775724/jodedilonumu.pdf In PDF document text
    • https://planbmedia.hu/files/68723675396.pdfIn PDF document text
    • https://xabomipa.weebly.com/uploads/1/3/4/4/134484571/70fa283.pdfIn PDF document text
    • http://rideco.hu/upload/file/vapaned.pdfIn PDF document text
    • https://tuwakunasuj.weebly.com/uploads/1/3/0/8/130874309/6536359.pdfIn PDF document text
    • https://sapafusazefo.weebly.com/uploads/1/3/4/4/134496158/2960c792420.pdfIn PDF document text
    • https://pujuxapalijened.weebly.com/uploads/1/3/6/0/136009243/suzekegojaki.pdfIn PDF document text
    • https://www.trafiktehaklarim.org/kcfinder/upload/files/gisivokavud.pdfIn PDF document text
    • https://wawogikaso.weebly.com/uploads/1/3/4/7/134726687/622611.pdfIn PDF document text
    • http://kaica.org.sa/ckeditor/kcfinder/upload/files/velisenuvete.pdfIn PDF document text
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/0e39c0e3a53.pdfIn PDF document text
    • https://zudepiguzow.weebly.com/uploads/1/3/4/7/134774383/de990c9.pdfIn PDF document text
    • http://czdashan.com/uploadfile/file/2022022614560973499.pdfIn PDF document text
    • http://chialun.yun2u.com/upload/files/kusuvipebo.pdfIn PDF document text
    • http://artikos.pl/userfiles/file/41448433276.pdfIn PDF document text
    • https://www.takaotakano.com/kcfinder/upload/files/lajomowepisasu.pdfIn PDF document text
    • https://ziripovamenof.weebly.com/uploads/1/3/4/6/134647136/43e28fc8b2.pdfIn PDF document text
    • https://ragaz.co.za/YmrXLWy8?keyword=ruins%20of%20myth%20drannor%20downloadPDF link annotation
    • https://zuripiri.weebly.com/uploads/1/3/1/8/131856797/nirebebunuje_binegiluxiweton.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_off0000c2e0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c2e0.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000daf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF7 10832 bytes
SHA-256: f5940788fba1c1cb2e56af44235869c2224741f621a3bf01bb3eec94593ec115
font_02_sfnt_off0000f3d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 16604 bytes
SHA-256: e0e957eaf7841297e30e45470e88910d191252453100e17a99dbff502c3a1f37
font_03_sfnt_off00011ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF8 5116 bytes
SHA-256: 747c8cfbe0f78cc0e4c321012a4e517d39a6f2b3d350d4e3f9c913b890d3ea52