Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e37124f840b3b0b…

MALICIOUS

PDF

73.0 KB Created: 2021-10-13 16:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 2296b1459c09279ba12e0fb53d4210cb SHA-1: 89c7b5e535e2aef5c54997e2843b471f22072b4d SHA-256: 4e37124f840b3b0b0976ef7609154e606154d546e466f84a7d6dfd1d8b958396
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://titishop.co/upload/files/73879960317.pdf In PDF document text
    • http://nedirajtebosnu.net/userfiles/file/47589980311.pdfIn PDF document text
    • https://rwd.webseo.tw/upload/files/kijozewunuzasixivazawalop.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/430f9fea14b321786487043a72826643/jokemonadupulamojitigaxe.pdfIn PDF document text
    • https://santaclara.com/wysiwygfiles/file/zajiluruxabanuw.pdfIn PDF document text
    • http://piscesappliances.com/userfiles/file/duwiretomor.pdfIn PDF document text
    • http://anitacalderon.com/ckfinder/userfiles/files/92084971255.pdfIn PDF document text
    • https://seo-methodes.com/userfiles/file/93713370875.pdfIn PDF document text
    • https://kuraniterbiye.com/resimler/files/44303940586.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/vogogavuw.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/e553dd7608d9b9cc3e9a2b89a90e03ed/bijogasatajik.pdfIn PDF document text
    • https://ddnepal.com/assets/userfiles/files/foxulokasomiwef.pdfIn PDF document text
    • http://nhadeptannguyen.com/uploads/files/modifab.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/nupem.pdfIn PDF document text
    • http://kammerchor-lindau.com/file/95337821117.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/f3f0e748628a6a2bab62b6d9a1d6ed87/rurijagako.pdfIn PDF document text
    • https://hssanesteban.cl/files/vivosodit.pdfIn PDF document text
    • http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/nanudetusetinivi.pdfIn PDF document text
    • http://tagsu.com/attachments/fckattachments/file/59195162145.pdfIn PDF document text
    • http://dyneco.kr/userData/board/file/dukemaxamujamo.pdfIn PDF document text
    • https://keluargamimpi2.com/contents/files/forarapisufefebexokoxupud.pdfIn PDF document text
    • http://020tzs.com/baige/images/userfiles/file/laxagifewogapawofebeg.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/72897119265.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=mexican+at+the+bay+breezePDF 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_off0000b8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8BD 17780 bytes
SHA-256: ff79e0a8123093d10f45ad346fa877ab1bef50644f3ffd12e76db0072a59eddb
font_01_sfnt_off0000e6de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DE 10400 bytes
SHA-256: 3160c7bf253017f9d5d3efc96e9f4094d40e02b426907e151818f6b683b7c08f
font_02_sfnt_off0000fe6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1