Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a9539a9bea43e5…

MALICIOUS

PDF

87.1 KB Created: 2022-03-30 01:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: 54000480660264a1c6f6eb08e5065979 SHA-1: 689f84319b092a9d17a7ba6850bc3dac843b9f2a SHA-256: 18a9539a9bea43e58e076e30f270b5b88da866c577efe8850dc2ff2cd0475e98
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://wumifidadorubip.weebly.com/uploads/1/3/5/2/135298964/f6ae0f58.pdf In PDF document text
    • http://fxlcd.com/upload/file/gesefo.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/68412705211.pdfIn PDF document text
    • http://gcoekmr.org/cukashmir/User_Files/imagefile/96713762389.pdfIn PDF document text
    • http://zssulejovice.cz/kcfinder/upload/files/tojukasuxepanopok.pdfIn PDF document text
    • http://vectorma.ru/uploads/assets/file/99483109720.pdfIn PDF document text
    • https://ideeverdi.it/upload/userfiles/files/kufusofodotamovil.pdfIn PDF document text
    • https://kaminuzud.weebly.com/uploads/1/3/4/7/134705180/2167794.pdfIn PDF document text
    • http://worldnaturalfood.com/image/upload/File/81461173500.pdfIn PDF document text
    • https://supportsurgical.com.br/assets/kcfinder/upload/files/fagagopok.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/zujuwomebugeniw.pdfIn PDF document text
    • https://mewopufi.weebly.com/uploads/1/3/4/2/134265659/0775e5f1e8.pdfIn PDF document text
    • https://newogofifexepe.weebly.com/uploads/1/3/4/8/134884114/bawoselaniv.pdfIn PDF document text
    • http://shopphutungmayphat.com/upload/img/files/zapodopidazajokudusipe.pdfIn PDF document text
    • https://pufoputinagof.weebly.com/uploads/1/3/4/2/134234879/fasepuraraso-webuluxul-bavidof-valetegepud.pdfIn PDF document text
    • https://gurazelifu.weebly.com/uploads/1/3/0/8/130874247/5a7d7.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/nomabuvovewujipoteb.pdfIn PDF document text
    • https://mapst.org/Admin/assets/ckeditor/kcfinder/upload/files/kusopisepuzugi.pdfIn PDF document text
    • https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/gulele.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/vaputeji.pdfIn PDF document text
    • https://miwawedunosojoz.weebly.com/uploads/1/3/1/6/131606480/7275371.pdfIn PDF document text
    • https://vegilumos.weebly.com/uploads/1/3/1/3/131383621/e75740406a2a7f.pdfIn PDF document text
    • http://sherpakhabar.com/dbros/public/ckeditor/kcfinder/upload/files/49905011988.pdfIn PDF document text
    • https://ragaz.co.za/YmrXLWy8?keyword=where%20are%20relion%20test%20strips%20soldPDF 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 extracted file (font_00_sfnt_off0000f015.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f015.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF015 10480 bytes
SHA-256: 0d53560659e57ce80b35c42c1bda4e102e1efd4f9ceaef90b8569c615eeb112a
font_01_sfnt_off000107d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D5 18000 bytes
SHA-256: 7da651952e6862e36022e5385c5271974a9df9452ad10bf36b045d4c0199b595
font_02_sfnt_off00013702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13702 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336