Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d52083d286808a…

MALICIOUS

PDF

41.9 KB Created: 2020-11-09 04:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f0bf49142545054601c24fb89b6e7acf SHA-1: 137f7d8bdfe58451bb02ade7105cde950536c810 SHA-256: 58d52083d286808af6d8757ce8f7256e9ec6c50a39ad602d55f54774c05774d2
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://trafffe.ru/aws?keyword=opera+mini+apk+download+for+windows+10 PDF link annotation
    • https://kuvinonufero.weebly.com/uploads/1/3/4/3/134307364/901a858.pdfIn PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/fetarofafojuwe.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/1571621.pdfIn PDF document text
    • https://xororowikaluna.weebly.com/uploads/1/3/4/6/134643421/beabd6.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.pdfIn PDF document text
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/xejunexodirosaz.pdfIn PDF document text
    • https://naxupezo.weebly.com/uploads/1/3/4/3/134350891/boref_viwogawabuzija.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/ed40f72d-e7e0-45fc-a7ec-b79be5df440d/rufusazajosidadipitanulub.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/cuento_bienvenido_bob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb5529a-1ca5-4a8c-b8e6-c8372168064e/zebuninigesezuzibeliwe.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/blank_sheet_to_type_on_print.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62e5895-758c-4f15-8c42-c036bfae5fc5/sixokebozamepu.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_off000065d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65D8 5564 bytes
SHA-256: f97112f178f06c95be004b5b51d02837dd0f649c66080bba23dc4e933f157959
font_01_sfnt_off000078c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C1 9992 bytes
SHA-256: 88414e4660e62d13d3373839d575ae50994b569995c7904426fb1cebf9452a42