Malicious PDF — malware analysis report

Static analysis result for SHA-256 351ad8dc550eaaed…

MALICIOUS

PDF

40.8 KB Created: 2020-11-06 04:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 03b91ca41a2243e66a54e49a25d660af SHA-1: 204ff7446a28333f0e3167126902ebd1bd6d381d SHA-256: 351ad8dc550eaaed9d7cedcad7aedf617b5eae67c7ba0c8d710a47ae36cf8daa
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://trafffi.ru/123?keyword=what+is+the+best+ge+refrigerator PDF link annotation
    • https://jumuwubugunitus.weebly.com/uploads/1/3/1/0/131070493/semagewe.pdfIn PDF document text
    • https://kegilosibumu.weebly.com/uploads/1/3/4/5/134513635/jufisesujixedid.pdfIn PDF document text
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/binosoterapizuxu.pdfIn PDF document text
    • https://boxolajabamofi.weebly.com/uploads/1/3/4/3/134356625/2537622.pdfIn PDF document text
    • https://jexumaravoza.weebly.com/uploads/1/3/4/2/134265375/262b4dd51113d7.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/todelo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421778/normal_5fa0b0e49d90c.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/9528911.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378404/normal_5f8b348136853.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/199b7bcb-3ec5-4f0d-b371-526d8e93fdfc/jinavifetupano.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/raxoraxaxuwuweg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5371 4832 bytes
SHA-256: c07b85cfa690aac71750588b556d6433d2d6d01b67b0d03ca931322760b55f3f
font_01_sfnt_off000063fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FB 10872 bytes
SHA-256: 82c169dc711fb2d1857901f32d5e171901a5fa6327ee03998f7e58ea3b914e22
font_02_sfnt_off000088b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2