Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b4de09c48c6242…

MALICIOUS

PDF

48.4 KB Created: 2020-10-18 00:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6a314bbb84669f829514cb998bb4f7d4 SHA-1: f9d36b4a97ed6eaac30b885254ca347a92777912 SHA-256: d8b4de09c48c624293561b0ca9718c689d3321c79473490104c5b063d300176d
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.me/123?keyword=guns+of+glory+bot+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f87597f3dac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8b4f4e31aa4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375515/normal_5f8b5db378034.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f88f759d239d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86fce6713e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f8b5f68e6e0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378618/normal_5f8b4345bb31d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5f8a009c3a34c.pdfIn PDF document text
    • https://kusebedanosude.weebly.com/uploads/1/3/1/1/131163667/6a802eed2366b.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/4443908.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/92feee913115.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/3272750490d9b93.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/2966987.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/ebaf340.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/1640921.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/lukinabowib-zazepuwilef.pdfIn PDF document text
    • https://lowizozexide.weebly.com/uploads/1/3/0/7/130776176/9441920.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/28ff65a3-b033-4c4f-a30f-392c59d6f281/41597055044.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddaee9e9-fb86-4346-8d68-a94c01161d50/12864013241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4f123a-dff0-42d0-bf8c-0131f26a7728/57309839072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690cc1c1-19e3-4afb-88c5-4145fcf7cecb/togek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b11d26-be31-446a-bf7c-079d0c1664a6/dimutox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9426/4996/files/gibilebonozibubafafagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6069/0589/files/55967484217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5654/3944/files/38364029307.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_off00007e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E64 5348 bytes
SHA-256: 889b7e695d2c678eba76ecd2cca8309df267ac5f8457a1c9bad425880298d996
font_01_sfnt_off000090ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AC 10288 bytes
SHA-256: 50ce0e37fa0fcd91fe637c2e0549d7fe11cf38b77376a7fbf9bc323ad61d7f7b