Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9c338bdaf1d9cea…

MALICIOUS

PDF

271.0 KB Created: 2022-02-09 00:44:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-26
MD5: 970348f7991e40e063130499d0662607 SHA-1: bd766caee422334aceb647fa790d6b35cd578fde SHA-256: a9c338bdaf1d9cea58e2009f64cdc151e37e12dcb21ceaf2c334d9dd51e6a688
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6903

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://plasticosgyc.co/kcfinder/upload/files/34238815032.pdf In PDF document text
    • http://tagsu.com/attachments/fckattachments/file/81447149600.pdfIn PDF document text
    • https://vivaldiroberto.com/img/files/mediafiles/file/18732491828.pdfIn PDF document text
    • http://isped.net/kcfinder/upload/files/22803464373.pdfIn PDF document text
    • https://dobski.pl/userfiles/file/tivetuwumutomas.pdfIn PDF document text
    • http://citlak.com/admin/UserFiles/file/forekufesul.pdfIn PDF document text
    • http://adimhukuk.com/resimler/files/sebasozogasopazesomu.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/76148284327.pdfIn PDF document text
    • http://hykylalumni.org/userfiles/68777076016.pdfIn PDF document text
    • http://watch62.ru/files/files/xelezapibunuteritufetazox.pdfIn PDF document text
    • http://ecrad.org.bd/assets/ckeditor/kcfinder/upload/files/99145194601.pdfIn PDF document text
    • https://gameadvisers.com/js/new/fckeditor/userfiles/file/mifovegefefo.pdfIn PDF document text
    • http://professional-tuner.at/uploaded/file/tufejepules.pdfIn PDF document text
    • http://lafenicealcamo.it/userfiles/files/baleributiwamoduxed.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/jaduxekusilafewelapin.pdfIn PDF document text
    • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/renobekej.pdfIn PDF document text
    • http://testwebb.net/kcfinder/upload/files/61634544193.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/pufijeba.pdfIn PDF document text
    • http://onlinetalk.jp/app/webroot/img/fckfiles/file/96504868686.pdfIn PDF document text
    • https://rieker-consulting.eu/files/file/76299073661.pdfIn PDF document text
    • https://atl-50.com/files/file/suwukakigagamegenerovise.pdfIn PDF document text
    • http://ferbogar.com/assets/kcfinder/upload/files/musejobumowalined.pdfIn PDF document text
    • https://apatity.verlauf-ekb.ru/admin/ckfinder/userfiles/files/83995116365.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/gikapadujatapibobuvowop.pdfIn PDF document text
    • http://mirai-kankyo.com/userfiles/files/jovimopeniror.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/f52f403db5320d432857a72f16da900e/vosimusosega.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ea02c270d---34383541178.pdfIn PDF document text
    • http://gesgo.de/userfiles/file/18759756727.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/dobogadolutes.pdfIn PDF document text
    • http://www.primariasantana.ro/uploads/file/begiratidizedakiwike.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/54742733092.pdfIn PDF document text
    • http://agrariusnet.hu/admin/ckeditor/kcfinder/upload/files/likovesoxefizaluwosegatu.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/38742532221.pdfIn PDF document text
    • http://promerilaclama.com.tr/panel/kcfinder/upload/files/wuwabusinofemifiji.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/44527789111.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16150fba3a49d0---28399331142.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/61481463073.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202107191045412511.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/78037479556.pdfIn PDF document text
    • https://kaparatt.com/images/File/14721065995.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/xupepugejukuxades.pdfIn PDF document text
    • https://murtenhof.ch/userfiles/files/58797785187.pdfIn PDF document text
    • http://aiskreunion.com/clients/b/b4/b417c2091670ce0b0d78f4b231aea02c/File/fukosatas.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/febumedegadup.pdfIn PDF document text
    • http://garageanything.com/js/upload/files/38950039809.pdfIn PDF document text
    • http://artstudiodesign.it/userfiles/files/bikovubebomifafen.pdfIn PDF document text
    • https://sunuf.co.za/XSRYdR1H?utm_term=the+binding+of+isaac+rebirth+android+apkPDF 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
    +5 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003c42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C42E 21308 bytes
SHA-256: 37689d8378e5d75a3210c50581b35128b59741f8a3371bea8c41a856f7f477a0
font_01_sfnt_off0003fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FB4D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004126e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4126E 11048 bytes
SHA-256: a3498c36c28d003dfeb67a4aa1c97f0218895d2787a52d8405831de6564ec424