Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99670c9f7d7e88d…

MALICIOUS

PDF

42.4 KB Created: 2020-11-08 03:44:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 07de145be3502c30c6666c55a3f9ab52 SHA-1: 7985401ad93cdeee9efa074e00eee0f6e3a26761 SHA-256: d99670c9f7d7e88d69190fb5e47a82508c236f54868151c17612bc2c4118979e
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/aws?keyword=tri+city+herald+obituaries+funeral+notices PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382408/normal_5f8c92913ca2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403685/normal_5f9dc54f96f4e.pdfIn PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/0fb06.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/dinabejowabojuxe.pdfIn PDF document text
    • https://fanamariruzatad.weebly.com/uploads/1/3/4/5/134514157/547154.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/f7681016.pdfIn PDF document text
    • https://fiwenozagor.weebly.com/uploads/1/3/4/3/134363395/8162831.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/a6a1e3db-619b-4ddf-9f55-7ea83cb92642/steven_berry_md.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/340468fa-d780-49de-8e27-02d94084f91d/fimudimuw.pdfIn PDF document text
    • https://safobekuget.files.wordpress.com/2020/11/fagovasedidoxedid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3a8af4-5dfe-4907-bfc2-9b014aa53300/xeninosolasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57a1602-29a7-477e-b61b-66ab10b421f2/clover_hill_christian_academy_midlothian_va.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/270c7470-b6fe-4d5d-a2e4-82b62a7baaf2/kozobegugam.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_off000066d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D4 5300 bytes
SHA-256: c73a083bb51dd8fdc2343a1d075937403057af68283b025b83ed24f0a23600bc
font_01_sfnt_off000078da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DA 10624 bytes
SHA-256: 87530f132559706133b75c5d87ea6d720ccc8bd3a08b5d156be554afd9109b82