Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21839fb9898f71…

MALICIOUS

PDF

66.9 KB Created: 2022-03-27 23:38:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 4eb3534fbdf4c8c03c3c010316fdb24a SHA-1: 04da2c4f9c6676f01e1a090a05563f80224d8c4b SHA-256: af21839fb9898f712631a2075ab0a1303afa89ff120837f36c6ffcb99da7d654
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 7

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=how%20to%20reset%20an%20adt%20alarm%20system PDF link annotation
    • https://rogozinigaki.weebly.com/uploads/1/3/7/5/137516336/5eaeeb3065b5.pdfIn PDF document text
    • https://kagunalikabogow.weebly.com/uploads/1/3/5/3/135350350/pefoxo.pdfIn PDF document text
    • https://bafobuxog.weebly.com/uploads/1/3/4/3/134316473/mumoduj.pdfIn PDF document text
    • https://pusurezifokuni.weebly.com/uploads/1/3/4/3/134317864/9628189.pdfIn PDF document text
    • https://tisolalaw.weebly.com/uploads/1/3/0/8/130814234/situludulabudozo.pdfIn PDF document text
    • https://mewuvonemifutu.weebly.com/uploads/1/3/5/3/135394867/rabelor-rexijuv.pdfIn PDF document text
    • https://tepugajir.weebly.com/uploads/1/3/0/8/130874129/foxugodos_fireba.pdfIn PDF document text
    • https://gozogofina.weebly.com/uploads/1/3/5/2/135293272/baritename_mapazep_sokabopirut.pdfIn PDF document text
    • https://gekojufoj.weebly.com/uploads/1/3/4/4/134438070/mosudetimufa.pdfIn PDF document text
    • https://xafituku.weebly.com/uploads/1/3/4/8/134863640/muwozato.pdfIn PDF document text
    • https://tusujowifavenag.weebly.com/uploads/1/3/1/4/131453847/7095193.pdfIn PDF document text
    • https://lojopozubog.weebly.com/uploads/1/3/1/6/131606756/sexokox.pdfIn PDF document text
    • https://lonerunit.weebly.com/uploads/1/3/4/0/134017922/kozotudokuti.pdfIn PDF document text
    • https://tidekomix.weebly.com/uploads/1/3/4/4/134441433/xipuwukasip.pdfIn PDF document text
    • https://birijoxumel.weebly.com/uploads/1/3/4/5/134587798/669807.pdfIn PDF document text
    • https://zizobisorodevu.weebly.com/uploads/1/3/5/9/135964877/2393663.pdfIn PDF document text
    • https://fijefozumomaba.weebly.com/uploads/1/3/4/4/134491855/nubifozusowox.pdfIn PDF document text
    • https://xuxerativizujaf.weebly.com/uploads/1/3/1/0/131070719/rumewofitidudiziwo.pdfIn PDF document text
    • https://vifesomojijafi.weebly.com/uploads/1/3/4/3/134337648/populana-xitabuvawa-tasalo.pdfIn PDF document text
    • https://wevabubuked.weebly.com/uploads/1/3/4/5/134584052/933d907a1.pdfIn PDF document text
    • https://xolesozetenosox.weebly.com/uploads/1/3/1/0/131070434/lagozi.pdfIn PDF document text
    • https://jurojapelo.weebly.com/uploads/1/3/4/8/134878956/ece33515a.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_off0000a2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000b971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB971 16724 bytes
SHA-256: 062820686a0bbc9b50a70f1327ade990e5fbeeb6718f530697552730ed3c31ad
font_02_sfnt_off0000e55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55C 10508 bytes
SHA-256: dc773d238908328f6f9bf5293965d2a75f456c8a998b34ad7241637cb90f431e

Open this report in the interactive analyzer, or submit your own file for analysis.