Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e5cad5b6eb4879…

MALICIOUS

PDF

46.8 KB Created: 2020-10-15 18:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8ba1a484880c4ec08c34dcb474704095 SHA-1: 219d483e8ef9ad97f6e5d33b025de86a6d321989 SHA-256: 07e5cad5b6eb48797322c67de647277a890b16d01f629a7be1530dc339d3586e
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://gettraff.ru/123?keyword=buku+bascom+avr+pdf In PDF document text
    • https://site-1038477.mozfiles.com/files/1038477/57455362213.pdfIn PDF document text
    • https://site-1038861.mozfiles.com/files/1038861/tibaduzeruguzejijis.pdfIn PDF document text
    • https://site-1040144.mozfiles.com/files/1040144/mogodonibatalofofasodul.pdfIn PDF document text
    • https://site-1043279.mozfiles.com/files/1043279/zirekute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f870bb580dee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5f87d371877c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f87a4ac7689f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f87bf9721847.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8775de735ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f87740019a51.pdfIn PDF document text
    • https://site-1044191.mozfiles.com/files/1044191/jonapetimilev.pdfIn PDF document text
    • https://site-1038700.mozfiles.com/files/1038700/75652859500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_5f8863eecf354.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f878777d6aab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87038d8c4d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f87c72e69be8.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/ec42c481-0c10-40ab-acff-d4ee1d99f7a2/fegilenufibosijibopepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ced74a4-c891-4ab6-80d8-1262294e879d/navufipovatis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c465570-342f-4322-9482-990ad8dfa6b5/rajofipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87cc8a92-2f0d-4e13-9150-2f93b232305d/jigeluwokovujatekiseji.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_off00007851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7851 5580 bytes
SHA-256: 9a535172837a0d1437e88452dc29353b7e4f6ec6b6c27ace5494daeae289ba69
font_01_sfnt_off00008b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B30 10256 bytes
SHA-256: 65b27d23121d2e72a640c1b03318e4ca4790b6f13dabef0b0076edf2deb58a6b

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