Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8341897189e5b7…

MALICIOUS

PDF

93.1 KB Created: 2022-04-05 06:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 428e013f7e74eba07c6a25893e497ff0 SHA-1: 21f63fc25f660d6bc06705290dc29ba001b82817 SHA-256: 5d8341897189e5b739d4687b6f39fb94a337995a5965c0789ddabb5834584e6c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://lovig.co.za/YmrXLWy8?keyword=mossberg%20590a1%20review%202017 PDF link annotation
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16225ab693940d---xopodolos.pdfIn PDF document text
    • http://minhquoc.vn/ckfinder/userfiles/files/40653431899.pdfIn PDF document text
    • http://fuguchair.com/upfolder/e/files/20220305204913.pdfIn PDF document text
    • http://hiroi-es.info/yamituki-n/uploads/files/75941335506.pdfIn PDF document text
    • http://casopisfolklor.sk/assets/kcfinder/upload/files/81199246889.pdfIn PDF document text
    • http://dtmaso.com/public_html/Imagens/file/44786810167.pdfIn PDF document text
    • https://www.rapn.ru/ckfinder/userfiles/files/naregizexakoka.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621ea95a6b882---81560616982.pdfIn PDF document text
    • http://prompol.com/media/file/kivigosotivi.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/nofuroti.pdfIn PDF document text
    • https://dakhoathienhoa.net/images/files/kenawugiwezariludez.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/51793244965.pdfIn PDF document text
    • https://poetnazrul.com/kcfinder/upload/files/59517854130.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622b3e0ab7d41---2466408478.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/bogiba.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/vutubenusubekot.pdfIn PDF document text
    • http://safakkereste.com/kcfinder/upload/files/22618217150.pdfIn PDF document text
    • http://ever0036.com/assets/uploads/ckedit/files/20220318104827.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/pazotodaveduzapotakozireb.pdfIn PDF document text
    • https://nikolettacukraszda.hu/images/fck/files/vaxegugikovij.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/83801817779.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 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_off0001042c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1042C 18296 bytes
SHA-256: 349d56fa83dc1be20414108f5966a5099d3015b3adc4bb562a4eb823445b796d
font_01_sfnt_off00013460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13460 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C77 10964 bytes
SHA-256: f9a77e405c0ce6657571921dcbccc3200f2870a8b175d0a41a7acb4b0adb43b0

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