Malicious PDF — malware analysis report

Static analysis result for SHA-256 5524be5ddefe841a…

MALICIOUS

PDF

77.4 KB Created: 2022-04-13 19:37:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: d8893f9d48047d1c7b5736204bb9ab12 SHA-1: 0d4a2433845e3bc59d0c38ba33b7344a19b8dd5d SHA-256: 5524be5ddefe841ad3a4d2410e004199375126129e60d3ad121ac6b174cbf264
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://wirut.co.za/YmrXLWy8?keyword=acoustic%20audio%20aa5170%20review PDF link annotation
    • https://rofexelugikovu.weebly.com/uploads/1/3/4/7/134732340/roseda.pdfIn PDF document text
    • https://fonutupo.weebly.com/uploads/1/3/4/7/134727000/9436237.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/pibuxekukasogokejok.pdfIn PDF document text
    • https://wotemaruli.weebly.com/uploads/1/3/4/3/134366333/xanozoterad-gogewuroxufap-fawubo-betosolike.pdfIn PDF document text
    • https://dfkcnc.shopper-store.net/file/file/zefozepunegaj.pdfIn PDF document text
    • https://filuvinuro.weebly.com/uploads/1/3/4/4/134455556/xexezujujagezufigaw.pdfIn PDF document text
    • http://bunkerhill.thriftstorewebsites.net/flash/bunkerhill.thriftstorewebsites.net/file/suxisotetoxow.pdfIn PDF document text
    • https://wisakonison.weebly.com/uploads/1/3/4/7/134766038/bifos-tasaw.pdfIn PDF document text
    • https://punofusa.weebly.com/uploads/1/3/2/6/132695323/2099674.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/regegubove.pdfIn PDF document text
    • https://butoxuxesadi.weebly.com/uploads/1/3/4/6/134699311/kadisoxibomifegod.pdfIn PDF document text
    • https://pusiwemesezupob.weebly.com/uploads/1/3/5/9/135962263/lipan.pdfIn PDF document text
    • http://maxbrio.kr/files/files/49998458488.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/87540401966.pdfIn PDF document text
    • https://duvujisukodat.weebly.com/uploads/1/3/4/6/134674851/nidelemozemi_kesorerotijoga.pdfIn PDF document text
    • http://www.oftalmed.com.br/files/ckeditor_custom/kcfinder/upload/files/361743911.pdfIn PDF document text
    • https://fakavenudir.weebly.com/uploads/1/3/4/0/134042443/miwod.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16228850cc7660---zejanakewezudevo.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_off0000c73d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c73d.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_off0000c73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000df4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4F 17556 bytes
SHA-256: 23bbbb9f37546969165e57ceca089eeee0fea1fde2d2e3612c621588151dea15
font_02_sfnt_off00010d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D22 10804 bytes
SHA-256: 906d6a1ad6ae2c70f77c67b79ceb5967355395f68b06a7ae1955621b9b5d54c2

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