Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4f8f22fd498645…

MALICIOUS

PDF

68.6 KB Created: 2021-03-03 06:08:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4d66ab894333d11be9c581de48ab3304 SHA-1: 8ac81fd3160181673d0ee50876228e5f46569519 SHA-256: 5f4f8f22fd498645a31100b8ba4c389b065abba3123c926af92c215dc0e9b7b0
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/award?keyword=tarot+decks+etsy PDF link annotation
    • https://cdn.sqhk.co/xeliwiwogivo/UuIhbgg/26614223964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_602aaad309e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490127/normal_600a7416b3b71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475570/normal_5fd3d90ecaf70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410727/normal_6001aa0f4178c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381534/normal_5fef3d1cc4b7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413982/normal_5fffda3a74731.pdfIn PDF document text
    • http://xakidofe.sportsontheweb.net/4x4_rubiks_cube_oll_parity_algorithms.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/BCjzggm/kelemuluzizuwexotodol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445326/normal_5ff5dce89d3a1.pdfIn PDF document text
    • https://cdn.sqhk.co/lilodipu/chciauF/mixuzuketesojokisumumas.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/what_is_business_communication_skills.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/42463994732.pdfIn PDF document text
    • https://cdn.sqhk.co/nibidawe/hiQhhjj/sadilimaladiza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490123/normal_601bb17f386ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nejimafalun.onlinewebshop.net/wanal.pdfIn PDF document text
    • http://zedofaxuboz.onlinewebshop.net/2011_dodge_avenger_ac_not_working.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/sweet_clara_and_the_freedom_quilt_online_book.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/68013776001.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_off0000d144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD144 5016 bytes
SHA-256: ebd42b21aed3b4152cf7a22c134c9506d4ada73d4f9f5be38bbf1dae9c462e14
font_01_sfnt_off0000e270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE270 10200 bytes
SHA-256: f2daa142f2c1a3d436da21ff209653b5b660eec69a59f485545ec2a3f71af2fb