Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d8f27916c463fc…

MALICIOUS

PDF

34.3 KB Created: 2020-11-08 03:49:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 35181b230e3e1d326ff46922b0f6975c SHA-1: d1910c46aedee7c01776f1509e94b0137a9a1f40 SHA-256: 92d8f27916c463fc4750d66440c333f4ffe18dbee1ee035e2a336ab68b110e69
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=speedaire+5vc91+desiccant+air+dryer+manual PDF link annotation
    • https://sivusemekatew.weebly.com/uploads/1/3/4/4/134491367/a4209a00f9c.pdfIn PDF document text
    • https://pajodutakimileg.weebly.com/uploads/1/3/4/4/134474341/femofinumojeruzez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390374/normal_5f9264fe9ecb3.pdfIn PDF document text
    • https://nujawarasut.weebly.com/uploads/1/3/4/3/134310583/5392561.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://zojemadej.files.wordpress.com/2020/11/73587489466.pdfIn PDF document text
    • https://ririvolo.files.wordpress.com/2020/11/behringer_x32_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/sniper_guided_bullet.pdfIn PDF document text
    • https://xamizujoxi.files.wordpress.com/2020/11/present_simple_present_continuous_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec20257c-a948-4122-a3a4-4a66134b68bb/kujediwelomagoregaxoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d6e7e6-5c9c-4589-b5dd-c325ca315695/35790008130.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_off0000431c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x431C 5816 bytes
SHA-256: a6842cba0bb4c11ed840f6d181b436d18cceedaf25fcee3320c6df1d7ec0af76
font_01_sfnt_off000056e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56E9 11104 bytes
SHA-256: f014761d27dd9e7bfb8467462d38d4b5467f5597df4e705ebac1615f3e8e8aec

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