Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa9c52338e3f6a…

MALICIOUS

PDF

274.4 KB Created: 2022-02-06 06:28:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: bd5d53850a409fcb80e64cece48c7703 SHA-1: b7294311c889435004d4516afac75e777095e9d4 SHA-256: a4fa9c52338e3f6afa394f605cad91baec715867a41aafa009da40e26615194b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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
  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. 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://sunuf.co.za/XSRYdR1H?utm_term=apple+airplay+windows+10 PDF link annotation
    • http://ropesadventure.com/d/files/56006636350.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/fomojiwafoli.pdfIn PDF document text
    • http://akvari-um.ru/userfiles/file/lelilefepusifijedenobe.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/sesarez.pdfIn PDF document text
    • http://www.saito-ken.jp/userdata/file/81384339272.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/lasel.pdfIn PDF document text
    • https://resepangka.org/contents/files/jugimoxo.pdfIn PDF document text
    • http://zekidilektekstil.com/images_upload/files/vobumazawusikikazamu.pdfIn PDF document text
    • http://aaz.sk/editor_uploads/files/96571945542.pdfIn PDF document text
    • https://www.tfsuk.com/kcfinder/upload/files/8733567993.pdfIn PDF document text
    • https://buildingexpertsdirectory.com/ckfinder/userfiles/files/20179586307.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/f69tg6pn2vju6dbb66b2pb8mf7/jexudinirosisasejiv.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/4099869950.pdfIn PDF document text
    • http://jan-fotografie.nl/upload/files/xenewivifurimuxula.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161251f0cc30c3---77356517233.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612557f64bc4a---lerujoxebu.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/bimijukidamow.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/23470446781.pdfIn PDF document text
    • http://tuzy.pl/Upload/file/degukebiwuxebiwitatu.pdfIn PDF document text
    • https://santchavarabed.in/ckfinder/userfiles/files/32539868159.pdfIn PDF document text
    • http://lam.kiev.ua/kcfinder/upload/files/difajubesuwijibena.pdfIn PDF document text
    • http://peetersinstallatietechniek.nl/upload/files/ruranowutikefalel.pdfIn PDF document text
    • http://macautemple.com/userfiles/file/48538380919.pdfIn PDF document text
    • https://doosradashak.in/ci/userfiles/files/tawutifirusane.pdfIn PDF document text
    • https://rasathantrananotech.com/ckfinder/userfiles/files/fumulutopebiro.pdfIn PDF document text
    • https://towa-aaa.jp/userfiles/file/baxelakal.pdfIn PDF document text
    • http://ridonhennet.eu/admin/kcfinder/upload/files/31914207.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog//file/36631546623.pdfIn PDF document text
    • http://edisonprivateschoolbeta.com/cote_dor_import/admin/ckfinder/userfiles/files/wutin.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fceae9a606f---46883221095.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/sj0gbb22op0ck6d6cgi2df6mv2/98034948841.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021071820471973499.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/rulom.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/78742510945.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_off0003d331.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003d331.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D331 27648 bytes
SHA-256: c9426d54c5f6f0af1873900cf04714f412b29c35b19cc7b263176c138782938e
font_01_sfnt_off00040a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40A58 10640 bytes
SHA-256: 90bdae79586f68d5d575153c1a981203f7adfc7d4f0d431ebb7bd89d6ba2ac21
font_02_sfnt_off000422e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x422E5 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9