Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb40eb7c74e92e6…

MALICIOUS

PDF

41.3 KB Created: 2020-11-07 09:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: baa9d2b051f2bf560727d95b912a4de8 SHA-1: dc30103e6b879d13fd598d113bbf81053a6b13a9 SHA-256: eeb40eb7c74e92e6832eb90b882b8d65131c7afa383c6023a5d41b8a36b4fca5
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/123?keyword=lil+bibby+net+worth+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417029/normal_5f9505c2c463c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5fa3e7b1770b6.pdfIn PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/zujafakawupejiz-juwez-jagajezadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f8b5ddb52cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f8cf24719402.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/gulizufag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f9123ee14f1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5fa05d235ef06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gorujugiximu.files.wordpress.com/2020/11/karipevo.pdfIn PDF document text
    • https://pazeden.files.wordpress.com/2020/11/86767518253.pdfIn PDF document text
    • https://pifujimuseki.files.wordpress.com/2020/11/83908810896.pdfIn PDF document text
    • https://nuziwonuw.files.wordpress.com/2020/11/79895207166.pdfIn PDF document text
    • https://sisiviweze.files.wordpress.com/2020/11/goresosuvufat.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_off000060f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F4 5144 bytes
SHA-256: dabfbf5038a039485f7f34f924c39b9ba498d7ef8d6c45d6c0582b6625988d87
font_01_sfnt_off00007290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7290 11484 bytes
SHA-256: c9d41ed95e1ecd6e2f3cc531a3ae6dc77654a87852773aa8fc46dac9c5af0e80