Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e7521754b42848f…

MALICIOUS

PDF

48.7 KB Created: 2020-10-27 00:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: cc9648753a3833e2da88b76e2824ebed SHA-1: 184a19155a4e5babe3e5ce1451897597add8f26a SHA-256: 7e7521754b42848fd38b5d1f4d52b8890c8e426d00d647f1452a04aa14fc637b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ttraff.club/123?keyword=beats+studio+headphones+user+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f8d7592bfc68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_5f89ef25bca6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f8953da7333e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_5f8a55875fe35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369507/normal_5f87f2556767c.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/gilusawusikiw_lonanugudug.pdfIn PDF document text
    • https://juxupadozimufa.weebly.com/uploads/1/3/4/3/134388451/ecd3769f49.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/0b5ba.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/4726015.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/cd733.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/bupoxegikifu_fenamijixogos_jimoxovume.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/054c25bd5.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/b0b6764591071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369333/normal_5f8d44b95af92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5f91b7fb98c15.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/d043cd16-3f44-4d7e-b9b6-1b819b1909c0/16005796975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aecfcd3f-3ce0-4580-883d-c3a17e6d6f99/apartments_for_rent_new_port_richey.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6df0b56-62d2-49c5-9b4f-69823f85a568/tasezotoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1103a41b-c5e5-495e-98f0-10a23e1ecaee/14756004787.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381c39f2-662d-4eff-841f-332ef4182679/1422537749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb61a57-1813-4374-b536-a7ba5e9f72d0/73602090853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d11349f7-a1c4-432d-ba6a-09d42f2bc1c2/dujurevulazusijol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5ee04d6-17e9-4563-b3c1-0649daad858c/65802543287.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_off00007ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA8 5248 bytes
SHA-256: b6a1450454bebb46d4f6b2d28c72671cdb91e6210ccf5570713438c1140a3918
font_01_sfnt_off00009046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9046 10836 bytes
SHA-256: 0d38e3dc397ce26de2497cfe22df9d68e1dd4a81147dde614a195e29d4125432

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