Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8eebcb0b7fed99…

MALICIOUS

PDF

79.2 KB Created: 2021-02-19 03:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 540ab66d3ca916fa9d8dce0a4eba4555 SHA-1: 0d2aa5bfb068b71794a8159a8c08360a185a22e2 SHA-256: 5d8eebcb0b7fed99c5a1b2ca44b3f04646161b23993ca4993eda0556750275bd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=qual+melhor+curso+de+marketing+digital In PDF document text
    • https://ganivakolijovi.weebly.com/uploads/1/3/4/6/134666525/sofodumoxafolod.pdfIn PDF document text
    • https://nepubodi.weebly.com/uploads/1/3/4/6/134610278/9398435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401976/normal_5fdc24b4acc98.pdfIn PDF document text
    • https://cdn.sqhk.co/sinewuvemomi/hbibNCf/celebrity_style_quiz_buzzfeed.pdfIn PDF document text
    • https://serarabasujuz.weebly.com/uploads/1/3/1/6/131606617/luzuwozoxi_zazuzewufegu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393511/normal_5fccadefc0be3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385612/normal_5fcea9974339f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376858/normal_6005c92191600.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/egebIii/colorful_cross_stitch_kits.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465402/normal_5ffb666f7e1a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418365/normal_6029709e4251d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380214/normal_5fefe69fe16e6.pdfIn PDF document text
    • https://bakasilamor.weebly.com/uploads/1/3/1/4/131407315/tubamopuvuz.pdfIn PDF document text
    • https://jinimajaloxole.weebly.com/uploads/1/3/5/3/135314869/gumexijoseto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wotalajo.epizy.com/10697953016.pdfIn PDF document text
    • http://jakowufa.epizy.com/56566725904.pdfIn PDF document text
    • http://natetakadax.epizy.com/linux_android_apk_install.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://scripts.sil.org/OFLIn 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_off0000dec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC7 5480 bytes
SHA-256: a3e147dabc82838adbd7c90c93a6df7fec01a962674bd41d2bb69b81ccb5308e
font_01_sfnt_off0000f138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF138 12688 bytes
SHA-256: 32af76b898cc5cbdb548f5e37b4afd0fac8fcbe3fe1daef515cf66ea7d98055c
font_02_sfnt_off000118da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61

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