Malicious PDF — malware analysis report

Static analysis result for SHA-256 445f6b684a7cb089…

MALICIOUS

PDF

49.4 KB Created: 2020-11-02 16:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 81c77fb283927f5595a8855d0e0ead6e SHA-1: d5065f3fc12d3609d88d05c17591355c0679ebee SHA-256: 445f6b684a7cb08955efefb4958e4dc9ede5a4c2387868299499fb89e563af31
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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/wb?keyword=metagmae%20remove%20windows%2010 In PDF document text
    • https://xefozevinunakab.weebly.com/uploads/1/3/4/3/134340699/5586601.pdfIn PDF document text
    • https://kugixixubeleji.weebly.com/uploads/1/3/4/3/134324677/vuvewamumisumu.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/disobafevawodug.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/bigupoz.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/5887223.pdfIn PDF document text
    • https://polivepuba.weebly.com/uploads/1/3/4/5/134582029/9290519.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/saliw-nidibido-waxaxado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2398/9435/files/lotutumunesodunuxakifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4025/9251/files/nexekotepawavuvetemup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7099f660-7bec-476b-9654-49ff9d648247/how_to_tune_a_banjo_without_a_tuner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5a7525-5269-411c-aa17-51635535ada5/66472704626.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1206e577-d55b-4374-9e9f-b337654d854b/how_to_isolate_a_variable_in_the_denominator.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000093d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x93D5 21636 bytes
SHA-256: 115552706c6d0d6f2bcdc6c04a4a69e6cb9fc6c6c0e27b45f04264c2ab0ba0af
font_00_sfnt_off00005db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB0 5464 bytes
SHA-256: dc4039a976219511b07b7d41c36d77c95660d97f6360349e9e9fe1c2f0e7b82a
font_01_sfnt_off00007053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7053 10316 bytes
SHA-256: 07bc288ae36f896a64f7e426a67881367f4021718bdc9a817537fb8d5412326d

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