Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8b2556f80364a1…

MALICIOUS

PDF

82.4 KB Created: 2022-04-08 22:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 4a837ae8b819fd4bfdd76e7a2073e984 SHA-1: 979d538da58569171c7b9e81dbeb60b4801dd727 SHA-256: cb8b2556f80364a1d5c41dca7a8a3614d10cd757eace3128121976c3b046d8a1
246 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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://ragaz.co.za/YmrXLWy8?keyword=coolster%20110%20specs PDF link annotation
    • http://atelier-tilia.cz/userfiles/files/moderijutugi.pdfIn PDF document text
    • https://bokirises.weebly.com/uploads/1/3/1/6/131607331/nusobenagugerepari.pdfIn PDF document text
    • http://hammaddedunyasi.com/panel/kcfinder/upload/files/vunupixewixitamidebek.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/tobojadurojirigajupaseles.pdfIn PDF document text
    • https://trafiktehaklarim.org/kcfinder/upload/files/71412017950.pdfIn PDF document text
    • http://thuexe7cho.vn/upload/files/maxavonizakezidi.pdfIn PDF document text
    • https://logomuwijo.weebly.com/uploads/1/3/0/7/130738525/52d10bbb20e.pdfIn PDF document text
    • https://gitikaru.weebly.com/uploads/1/3/4/9/134901111/seridasaz-kesub-zigujunovosapeb.pdfIn PDF document text
    • http://diveblubari.it/custom/archivio/files/34252413791.pdfIn PDF document text
    • https://buxodofuluni.weebly.com/uploads/1/3/4/8/134875319/a4e5159fff6bb46.pdfIn PDF document text
    • https://xemewewekakefo.weebly.com/uploads/1/3/5/4/135401485/7136947.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/89507826768.pdfIn PDF document text
    • http://simonhoirup.dk/userfiles/file/39179555652.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/39410841637.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/fukowimulevoxelilo.pdfIn PDF document text
    • http://dekoblickfang.de/userfiles/file/57870201369.pdfIn PDF document text
    • https://mebedepubini.weebly.com/uploads/1/3/0/8/130813558/3116f8f.pdfIn PDF document text
    • http://wingmanplanningdemo.com/userfiles/files/4944070548.pdfIn PDF document text
    • http://www.dieseproductions.com/upload/customNews/files/88864460770.pdfIn PDF document text
    • https://rititebavoxufi.weebly.com/uploads/1/3/4/7/134705535/wowavitodok.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/162172b0d270e1---fisumubezixizuvuzutajak.pdfIn PDF document text
    • http://prosquash.by/data/42743011314.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_off0000dd0a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000dd0a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0A 17992 bytes
SHA-256: 78fc4009b7e888f192430e1eda220a1060f131bc330f99078a9ede70f145398f
font_01_sfnt_off00010c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000124a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A5 10212 bytes
SHA-256: 04115361201dc265378e1fed7d58983531a186a3a25a470ccb52eee1c04cb5eb