Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2b1c6f123396ad…

MALICIOUS

PDF

44.7 KB Created: 2020-10-16 05:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2bfd40f2e5a919c0a975c61c0d7c550a SHA-1: d889e79232e63650bd0e46ae9d96a6d48588adf5 SHA-256: 5f2b1c6f123396ad57dcd99ae318e2ac63214c18f7e255049290f3890f635a6a
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/pify?keyword=how+to+use+windows+remote+desktop+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f874497681a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366973/normal_5f882fc5d9952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f874e1f1c2af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f874532610ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_5f88b5ba0a6e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5f886d5d75b5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f88fd72923dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f882bf66312f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f87234eb2732.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5f88c0523432d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5f88929be2d65.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/aa94aa7f99c.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5544981.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/ferodejukobamun-nonira.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/garibaxuwekos-lofegos-damaki-numuvelo.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/bekalan.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tadib-pepalitegugoj.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/0ed4b680-fb93-4fc5-9bf4-e0adc8808a75/dobatona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd8e6e0-4b5e-4769-812c-9b245ebb4d10/madojetedajoruxalizewetav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81bd1009-bb4c-4ea8-9cfc-691bb8984619/47151051595.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_off000072b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B0 5192 bytes
SHA-256: fe7e3d54377d1abeba30f6d76544f5b7936f6aa496cd640fe314ec8793eacea5
font_01_sfnt_off00008448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8448 9772 bytes
SHA-256: a58e71808a1e70af89c60ae8709cfd2d1b2376291cfeb8ecd304680480210d10