Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fbb4da735dc3303…

MALICIOUS

PDF

52.1 KB Created: 2020-11-06 14:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c8e0f58ba6252b83ed6d303b1126b060 SHA-1: 244d65a53119bc01e67412965b3c506e22439264 SHA-256: 5fbb4da735dc3303472925c71ff92d07e56fc06ec0996ab0ceb81bc24ff21135
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/aws?keyword=joker+full+movie+online+fmovies PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385228/normal_5fa405d8233c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f8711b8b03ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373797/normal_5f8b42411557d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f873cb87a071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8a1f23c7499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5fa4c6cd559f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871c75469e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374710/normal_5f9e13c7cef0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402940/normal_5f928c49a1ffd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f8f02bc64a87.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/7920f56d-9410-4eff-962b-b7587906dd2a/tukisabixegodebed.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/cell_respiration_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/43293231962.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/joboxasevorotudojitolim.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/fetilurepaxovezevezi.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/pokemon_snes_rom.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/aqa_biology_a_level_year_2_student_book.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_off00008caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAA 4816 bytes
SHA-256: 89f681c89764b3b4a1b11be0271336e83b7aac893eb2297dd9c8828b71b23ccc
font_01_sfnt_off00009d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D07 11904 bytes
SHA-256: 3dcb8c882e09c26739ab4e9e85517eec5da76954e9fe2c0d314c9f827c2e3869