Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fd9bff881d985e…

MALICIOUS

PDF

80.9 KB Created: 2022-03-29 10:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 3053edc9261bba986f8b271d855a742f SHA-1: 61d2bc522f9feabeb466f8103ca685568c83efcb SHA-256: a4fd9bff881d985e57e92e1b5a0490355b328d3356f65d304f6fb249499b1cef
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://yubit.co.za/YmrXLWy8?keyword=oregon%20scientific%20bar208hga PDF link annotation
    • https://wobumobovutukom.weebly.com/uploads/1/3/1/6/131606412/sikazijiko.pdfIn PDF document text
    • https://nodopemewave.weebly.com/uploads/1/3/2/6/132682748/af75b726.pdfIn PDF document text
    • https://xaxotomelaxip.weebly.com/uploads/1/3/4/5/134511260/tejubafofasalewixuka.pdfIn PDF document text
    • https://fomilapemarujan.weebly.com/uploads/1/3/0/8/130814088/9177395.pdfIn PDF document text
    • https://korexabareruwa.weebly.com/uploads/1/3/2/6/132680962/4b105cdd.pdfIn PDF document text
    • https://ronunafo.weebly.com/uploads/1/3/1/8/131856498/ddf127a3b7.pdfIn PDF document text
    • https://vuginavoji.weebly.com/uploads/1/3/0/7/130775358/wibojapus.pdfIn PDF document text
    • https://zunitaxipef.weebly.com/uploads/1/3/1/3/131398356/bodunab_rodakefa.pdfIn PDF document text
    • https://solubowobadiwu.weebly.com/uploads/1/3/4/6/134642134/pobusilofa.pdfIn PDF document text
    • https://kixodebu.weebly.com/uploads/1/3/2/6/132682063/zixanixuvun.pdfIn PDF document text
    • https://dafavazama.weebly.com/uploads/1/3/4/8/134893815/1dc435248.pdfIn PDF document text
    • https://kironipopobak.weebly.com/uploads/1/3/4/3/134308812/8626533.pdfIn PDF document text
    • https://wewilufada.weebly.com/uploads/1/3/7/5/137518209/b4479db2b9.pdfIn PDF document text
    • https://gawinageriju.weebly.com/uploads/1/3/0/8/130874076/koxem_jawugipilolita_jijunemugijof.pdfIn PDF document text
    • https://pobanofesu.weebly.com/uploads/1/3/1/3/131398475/b9de6d0.pdfIn PDF document text
    • https://napuvuwurus.weebly.com/uploads/1/3/4/8/134878984/b9360f.pdfIn PDF document text
    • https://pavovebowejimop.weebly.com/uploads/1/3/1/6/131607108/gitafeg.pdfIn PDF document text
    • https://nifufoji.weebly.com/uploads/1/3/4/4/134458522/6710838.pdfIn PDF document text
    • https://veriraxitinori.weebly.com/uploads/1/3/5/3/135394444/gagakek.pdfIn PDF document text
    • https://foragiluk.weebly.com/uploads/1/3/4/3/134374590/ebfa4.pdfIn PDF document text
    • https://paxuwuberuluza.weebly.com/uploads/1/3/1/3/131380725/c789d84f.pdfIn PDF document text
    • https://gegosituvoxefo.weebly.com/uploads/1/3/5/3/135349754/mikeganilomunaworupa.pdfIn PDF document text
    • https://ladeletoleworuw.weebly.com/uploads/1/3/4/7/134712388/6666526.pdfIn PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/linis-velesijurir-tutadiposigis-fuwelagidit.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_off0000d754.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d754.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD754 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000edf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF8 11184 bytes
SHA-256: b8f602d084ed5d3b0f40dc0e6ca0cf9e6de3f480c16652ca2d0c08226297bc62
font_02_sfnt_off00010821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10821 17268 bytes
SHA-256: 5589937a2b030e4a487be2c092d99cb432046a203383201044c2bb57bb89288d

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