Malicious PDF — malware analysis report

Static analysis result for SHA-256 624ffbba8951aa37…

MALICIOUS

PDF

46.0 KB Created: 2020-11-07 12:52:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 78ea297bd4ca5b8aaa3640efdd46eab9 SHA-1: 8c7c803b684477c48fd9b6895cc28f0155053806 SHA-256: 624ffbba8951aa37384001a5f989c7d823d82ddef6d8ea3b8d8b66faf1c0c048
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=the+thinker+s+thesaurus+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387031/normal_5f8e8b0590d69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tadovu/74209056670.pdfIn PDF document text
    • https://xanafegeze.files.wordpress.com/2020/11/munuzaragujilupipazabik.pdfIn PDF document text
    • https://vipuvixo.files.wordpress.com/2020/11/97151013341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb16c4b8-ee55-4be5-b17f-628a4ca07ddf/dixetedo.pdfIn PDF document text
    • https://fodatus857065.files.wordpress.com/2020/11/87990788060.pdfIn PDF document text
    • https://fafutuk.files.wordpress.com/2020/11/ajedrez_para_nios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bad19e6-47ac-427a-8688-3b2084d1526d/27715772567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ec906f-e418-4361-837f-11e00f48426f/76543425412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c2fa49-c63f-452d-836e-116a4f687457/18032114138.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/fizimobaruweboratiweti.pdfIn PDF document text
    • https://tijupojis.files.wordpress.com/2020/11/dobaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb44e3e-fa21-40a1-b7b6-290aefecf8c5/38252278764.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_off000076f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F9 5112 bytes
SHA-256: 5bf57301b0ae00707edb783f158774d75712b7f485b68ecb76c434359d6b75e2
font_01_sfnt_off00008855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8855 10408 bytes
SHA-256: fb6733be0ce78af4f809fdd4c90c717369e70b43e9da428a09abcfd55e7d40e6

Open this report in the interactive analyzer, or submit your own file for analysis.