Malicious PDF — malware analysis report

Static analysis result for SHA-256 f742fc49ae8125dc…

MALICIOUS

PDF

39.8 KB Created: 2020-11-08 20:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 567d2a41e7bb3d06d471f2189b89eea0 SHA-1: b1ea36dde7e73107ff18780a507a23d1327d00a5 SHA-256: f742fc49ae8125dce9c85b7e0b6e9b1f2f349eabed9af1f53edaf8f67f55dbda
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://trafficel.ru/aws?keyword=clippard+ymca+surge PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5f9e60997af0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5f8c951d16540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f8ca5f9e5213.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/vizaxe-zavagotapalevo-wujijodimunimet.pdfIn PDF document text
    • https://renesixedobalew.weebly.com/uploads/1/3/0/9/130969137/baxozisofis_jimojakiwa_muxepimima.pdfIn PDF document text
    • https://vibupawovilopi.weebly.com/uploads/1/3/4/3/134377541/wunewogojazowe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374963/normal_5f99af8cafe41.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://vakonowar.files.wordpress.com/2020/11/nijinifixelev.pdfIn PDF document text
    • https://gozevawu.files.wordpress.com/2020/11/749717543.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/vefadekofarufirupix.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/apple_shooter_unblocked_6969.pdfIn PDF document text
    • https://repebogumi.files.wordpress.com/2020/11/nuzajesoduwu.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_off00004ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED4 5104 bytes
SHA-256: 13a40b183617b1cde6cd7f6a65b2281e16b329bcc63c4473efe014c01e0521e2
font_01_sfnt_off0000602f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 10664 bytes
SHA-256: 1fb018dca15f8b3548f2f17e0496089315f403f86d33ab60bf9c0a330edd0dff
font_02_sfnt_off000084d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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