Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e458af13580f21…

MALICIOUS

PDF

168.8 KB Created: 2021-12-04 06:53:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 8f79605ba781f614a7b8e5b67069b04f SHA-1: 521d7031ce25560b547376fec173426fa7284dd4 SHA-256: d3e458af13580f21fbe1380e1f02cddee4117c937bb0361bb7c7346e50cd995a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8078

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://deesudcoolingtower.com/userfiles/file/sekogute.pdf In PDF document text
    • http://sfinance.mn/userfiles/files/dikemetibekil.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/eveorm8o2cs1dmpv921csrbi3s/kumufajasiwoxu.pdfIn PDF document text
    • http://hengtongrongshang.com/jingkelun/userfiles/files/20211021122216.pdfIn PDF document text
    • http://retete.pentrugatit.ro/userfiles/file/56234796128.pdfIn PDF document text
    • http://wanyuantemple.tw/userfiles/file/nalofoxula.pdfIn PDF document text
    • http://brezov-gaj.si/uporabnik/file/29059317397.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/7097704905.pdfIn PDF document text
    • https://telewebmarketing.com/FCKeditor/file/69580109162.pdfIn PDF document text
    • http://preiss.at/upload_files/files/nuzikabiponasovuvafapame.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/15575658895.pdfIn PDF document text
    • http://sitarofindiamd.com/userfiles/file/79392622080.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/92645883972.pdfIn PDF document text
    • https://duocvinhkim.com/userfiles/file/pikolabimo.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe8dfe89b8---zerowojovig.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/vibewedovetalujikijugeg.pdfIn PDF document text
    • https://anfauglir.com/images/file/20475471170.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/598507344651eddd363ec32964e620c5/xuwevizapebebetevivu.pdfIn PDF document text
    • http://kencert.vn/uploads/image/files/kunejumezusanabamugawozes.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/4097345570.pdfIn PDF document text
    • http://vps133.premo.at/userfiles/file/xusagomekitoruzotonefilo.pdfIn PDF document text
    • http://mudrberanova.cz/userfiles/file/baxemezenobusidekuv.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/34396735639.pdfIn PDF document text
    • http://energy-labels.nl/userfiles/file/xigavatenosegofuzekur.pdfIn PDF document text
    • https://atlas-consulting.ro/fckeditor/fisiere/file/3891223415.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617a22d10e082---31384025927.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/TSvcnjQ06Jg/uplcv?utm_term=ffxiv+doman+reconstruction+guidePDF 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_off000236a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x236A2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off00024d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24D41 17308 bytes
SHA-256: 01aaae8d96080a6395c5b1d8e8a9c62209b6cae2978d8c028360d6ccaabc233a
font_02_sfnt_off00027a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27A89 11016 bytes
SHA-256: 5016f320d9d5d56d194b01c01270c3d09a658e61646f6c0aa2beb3d8a104d5a0