Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b187cc32dbba43…

MALICIOUS

PDF

76.5 KB Created: 2022-04-03 10:43:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: ddbcbc07415076ff127d90a48f8f17a4 SHA-1: 88431fb48b6fa23dd41070846eb3825fca0dd77a SHA-256: 88b187cc32dbba43bbbc841fcc0f704051ec8fe122395afe1e7baf81b86a5687
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://nufusuninad.weebly.com/uploads/1/3/4/6/134609023/suduxasorixafad.pdf In PDF document text
    • https://foserexekoxa.weebly.com/uploads/1/3/0/7/130740627/tobevenuri.pdfIn PDF document text
    • https://webkapper.nl/ckfinder/userfiles/files/86435156327.pdfIn PDF document text
    • https://pixexibov.weebly.com/uploads/1/4/1/2/141280936/kijitaseju.pdfIn PDF document text
    • http://komornikstargard.com/userfiles/file/dimupisufevonerosis.pdfIn PDF document text
    • http://iba.chemolak.sk/userfiles/file/nusele.pdfIn PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/1741380.pdfIn PDF document text
    • http://regiapart.si/uporabnik/file/43996204911.pdfIn PDF document text
    • http://amanetauto.eu/kcfinder/upload/files/81090706393.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20220308233445.pdfIn PDF document text
    • https://tumunonapuve.weebly.com/uploads/1/3/1/3/131379134/boduxeniledasaj_pirozep_mulej_gasepelunuk.pdfIn PDF document text
    • http://uk-tk.com/kcfinder/upload/files/gagemamoriwikijupejolexut.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f91075e6572---jiwudiv.pdfIn PDF document text
    • https://sokazavuse.weebly.com/uploads/1/3/1/3/131378988/dutakisozifisurisi.pdfIn PDF document text
    • http://immobilier-valence-agen.com/userfiles/file/14636522165.pdfIn PDF document text
    • http://parejalecaros.com/adjunto/upload/fck/files/devubenegutaxarumipako.pdfIn PDF document text
    • https://dolaodong.com/userfiles/file/fesibexuroxegemiborugisoj.pdfIn PDF document text
    • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/b7b283f5a2b6.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/3142978.pdfIn PDF document text
    • https://tuwavuko.weebly.com/uploads/1/3/5/3/135394323/6e95c90fdba84.pdfIn PDF document text
    • http://eg-connect.com/uploads/editorfiles/file///79374174970.pdfIn PDF document text
    • https://loheb.co.za/YmrXLWy8?keyword=couples%20counseling%20certificate%20onlinePDF link annotation
    • 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_off0000c2a7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c2a7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A7 17624 bytes
SHA-256: 79fe35005066c2868de30c4cdba0ae956c59dc99afbb70820c06dcf349587b5e
font_01_sfnt_off0000f0c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C4 10784 bytes
SHA-256: 93f1e5c30d4dd8c495fc832b036096d32766229bad3a9f86a123be133bc656aa
font_02_sfnt_off000109ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1