Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecb833e79ffda236…

MALICIOUS

PDF

42.1 KB Created: 2020-10-17 08:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 60a3a1d66b37de4e72c886fc9f831f7e SHA-1: 7c42d9b6ee71a0e4eb83f9f9f109983df801c700 SHA-256: ecb833e79ffda23698a6141fb9a3c46e687f984d1a1caa8298e63e207a3cfa78
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://ttraff.me/123?keyword=comprehension+for+class+2+pdf In PDF document text
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/lobufonaxozufo.pdfIn PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/ratovu-kenin-mibejigani-jepapu.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/165573.pdfIn PDF document text
    • https://lavabowigu.weebly.com/uploads/1/3/2/6/132682694/fb88eb0049d3a5.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/1285448.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/5650151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f874fd5d5ba7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f87aa2c14d99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f87ced739455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f8a78e81ddee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f87104a76b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f8879e5c1786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f89435cc7f26.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/xusavu_zerezujikewe_vikepegujojaluw_duvorafof.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/6281626.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/5d6f2da.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/085dd078-0dc8-45ad-99c6-bd36ed3c6f5b/72113873974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0113d8b0-b6f5-434d-98fe-64e08054c6cb/sovita.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B8 5432 bytes
SHA-256: 0d819d426ddf17e2765a224f78193cdc923d1a70cea0806700b3bd00680bd55c
font_01_sfnt_off00007600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7600 11772 bytes
SHA-256: d8f223c298a6d4ec8c7bb611d563d2a813e25e84bcaf87707c53f09f250bc62d

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