Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f7b20210e83347…

MALICIOUS

PDF

79.6 KB Created: 2021-03-26 09:16:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c0b80ff5a82321d5c67b5d8d3a02f542 SHA-1: 71b0649da11c481c68d7448c444ca4d7cd5417c1 SHA-256: c0f7b20210e83347c27ab0d3d123cf2a0241d31c661314bd9df5c836d88cff66
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded URLs, with a primary focus on directing users to 'mezovuduw.ru'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed as a link farm on disposable hosting, suggesting a tactic to obscure malicious intent. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://mezovuduw.ru/wix?keyword=mage+leveling+guide+rs3 PDF link annotation
    • http://hotloveme.online/prepositions_exercises_pre-intermediateekreq.pdfIn PDF document text
    • http://bigwin-1xbet.fun/diablo_3_switch_multiplayer_split_screeno8y09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408875/normal_604f05765badb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444378/normal_5febc5cedf712.pdfIn PDF document text
    • http://usesol.xyz/moriwop5ls8j.pdfIn PDF document text
    • http://ludshop.xyz/mipaninolukuvisotb6qbm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cde023ca-d6ea-43dc-9c3a-2bc4b473d012/jaxenugugawinomagaled.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b926a460-b704-4023-a43e-4f305a850844/microsoft_excel_formulas_tutorial_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dfb8131-a93d-46a7-9bb7-4f0e15b2a967/putusifidumokefena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6865343e-4013-463c-b616-8c2ed22fdcf5/19707426905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e85bcfd4-6087-49d6-ad38-acd7fcf2bf87/gedekabafaronuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74abe7da-2e3d-4ee7-a1f2-97623ccf5436/65622116003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11bb9be1-6203-4418-960c-4915a2a6ad5e/frigidaire_fridge_repair_manual.pdfIn PDF document text
    • http://juzavogubi.rf.gd/xogunak.pdfIn PDF document text
    • http://xulitapaxi.rf.gd/best_kings_quest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98d5522-a04f-44c7-909d-6f457f31ef3d/kemiwatavumofugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a09076f-fb8d-42cd-be8f-dafb2452d897/nancy_drew_the_hidden_staircase_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/537c617c-0ec8-4929-81c9-41e35922d724/baby_got_back_song_in_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0421a5-19d3-4259-b1d9-df5e72d47d8b/love_yourself_song_lyrics_download.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C6 5224 bytes
SHA-256: bc22a42a0680ad2c3fed2ff764edf1860f331100f8cbb6b23b362d3e2bbbb101
font_01_sfnt_off000109b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B0 11504 bytes
SHA-256: 6c701a2d3710f00066f8118e1a1b39a17914c78bd9c17c349ed19e915da55091

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