Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b91fdd9e2c24f…

MALICIOUS

PDF

85.1 KB Created: 2021-10-23 03:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: a3d4323f2fe20a6b12f905e4925a6b33 SHA-1: 40437e18a80c408758012673c1501b271294c5cf SHA-256: 5d8b91fdd9e2c24f5eabcf451710823211d226104147bb7f6bf7e12012532777
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • 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 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://hse.tw/upload/file/ridujepukixef.pdf In PDF document text
    • http://kitpaisal.com/mypicture/file/15968752923.pdfIn PDF document text
    • http://originalavto.ru/userfiles/file/rugomizekuweluratod.pdfIn PDF document text
    • http://ministryofrum.com/memlogos/file/mijozafunifoludiw.pdfIn PDF document text
    • http://glampingcaravan.com/userfiles/file/20210925200405.pdfIn PDF document text
    • https://businessincasey.com.au/application/third_party/ckfinder/userfiles/files/13477534097.pdfIn PDF document text
    • http://villapellegrino.it/userfiles/files/41621044740.pdfIn PDF document text
    • https://acrgruppe.de/userfiles/file/xugemusozasifipevadi.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/95444762357.pdfIn PDF document text
    • http://ranchobg.com/img/file/7920534373.pdfIn PDF document text
    • http://kuppersbusch.hu/userfiles/files/kelotigomodopagukemaveras.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a9a625cb41---tiletu.pdfIn PDF document text
    • http://tatugigo.com/ckfinder/userfiles/files/jesebonok.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614dfe609f8da---44037439983.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/donabusugawiwebuduvapa.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/soxavaraxonidiwawobezif.pdfIn PDF document text
    • https://heyratacademy.ir/file/wanuladexok.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/60039662841.pdfIn PDF document text
    • https://fulzugaskozpont.hu/files/44404381272.pdfIn PDF document text
    • http://ibrahimalsada.com/pics/file/xijat.pdfIn PDF document text
    • http://ilonew.tasksplan.com/ckfinder/userfiles/files/vumuxakozovumut.pdfIn PDF document text
    • https://tworaise.com/userfiles/file/83638609722.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/kaxugisoparobozaso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/u-9XGpgKpwY/uplcv?utm_term=menu+costs+of+inflationPDF 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 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_off0000e665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE665 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE77 18620 bytes
SHA-256: 1142bfecf2070d49d310f8697ccf9250efda9a35a819b9c6d9529bfa7163123c
font_02_sfnt_off00012fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA2 10324 bytes
SHA-256: 45f30daf601a422c9f1f1228da4cb4ac740cd8ab8f5d66137613dd030ec2354a

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