Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f215f5492daa867…

MALICIOUS

PDF

42.2 KB Created: 2020-11-06 22:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9598f5e4f0dff2a6e84a44d666c033e7 SHA-1: ecc766c17ada0b758f2e71ce0e2f3662e21e6e14 SHA-256: 6f215f5492daa8670ba4e9fd2eb4031a6d5a6e96e39ed2465bafa878571be1ad
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://traffking.ru/123?keyword=gwinnett+county+warrants In PDF document text
    • https://pirizujimo.weebly.com/uploads/1/3/4/4/134454944/dewijatevekuzabodo.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/fewit-latafele.pdfIn PDF document text
    • https://nafafewite.weebly.com/uploads/1/3/4/3/134337559/3926677.pdfIn PDF document text
    • https://latopilufazi.weebly.com/uploads/1/3/4/0/134017217/jetonejevenemebedebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413705/normal_5f9c425f7e9f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408702/normal_5fa5a4edf135f.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/zipixonojube-sezozikosiv-litolixew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415331/normal_5f9b7de580508.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/71594d67-c604-4bf9-a3cf-f06d85fb883a/sunedaxita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/249bb538-58f3-4d75-8e7d-7b26eabebae5/aportaciones_de_genichi_taguchi.pdfIn PDF document text
    • https://wopuxipimupa.files.wordpress.com/2020/11/28668977111.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_off00006604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6604 4988 bytes
SHA-256: c95ec8e958d0c2c863b5bbcb12cdd05b349c8513a98912a01c01b5400e7e69e1
font_01_sfnt_off00007725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 11008 bytes
SHA-256: 710296c5e66319504b49b87da8dc53e3741373d2de458b8a3e2d41b0d27ac085