Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd698b46c7fba7b5…

MALICIOUS

PDF

69.0 KB Created: 2021-01-17 11:36:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 07f9a4620cd26f9d1efaf90c9b473e45 SHA-1: 6c127aa9720afe5a813e84d3a66bab949d738cd4 SHA-256: bd698b46c7fba7b5f49237e7dc6e2889de12250a49b89280e2151462c136f5f7
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier strongly indicated maliciousness, and the presence of multiple links on disposable hosting further supports a malicious intent. While no scripts were extracted, the document's structure and link analysis suggest it's designed to lead users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://ggtraff.ru/aws?utm_term=chronicle+magazine+january+2019+pdf+free In PDF document text
    • https://nobaletakalesig.weebly.com/uploads/1/3/2/3/132302751/jijawukalonavaxexi.pdfIn PDF document text
    • https://jepukarebav.weebly.com/uploads/1/3/5/3/135321711/457624.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f8983ad9ae93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_5fdc1497b7ab1.pdfIn PDF document text
    • https://sevepamazajekul.weebly.com/uploads/1/3/4/7/134745822/xugigamo.pdfIn PDF document text
    • https://mokabeninenaji.weebly.com/uploads/1/3/4/0/134013120/rorif-beduv-kelebupeg.pdfIn PDF document text
    • https://cdn.sqhk.co/roxigeve/hjgfjeW/project_management_tools_and_techniques.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wodasakuzetu.rf.gd/minecraft_animation_maker_for_android.pdfIn PDF document text
    • http://bolatufor.epizy.com/battleship_war_game.pdfIn PDF document text
    • http://xegiseko.epizy.com/pokemon_legends_quest_guide.pdfIn PDF document text
    • http://safasufozoz.rf.gd/relieving_letter_sample_in_word_format.pdfIn PDF document text
    • http://nepogewapiw.epizy.com/using_capital_letters_worksheet_ks1.pdfIn PDF document text
    • http://witopovuketoj.epizy.com/91608996317.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_off0000b93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB93D 6008 bytes
SHA-256: 15ae7759e25c65aff518a57ab89e6bb83e5677ffeeb794d7162801365dffc60d
font_01_sfnt_off0000cda2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDA2 10468 bytes
SHA-256: 14485e7c7a9d2b409402fa9cf640d8628cca878ffbb270ba88f96e80adc8534d
font_02_sfnt_off0000f1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AF 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6

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