Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff271612b742e99a…

MALICIOUS

PDF

39.2 KB Created: 2020-11-01 06:14:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: aa15d3f9da372d54f165d91b3696396e SHA-1: e23d7780451d06c1a99d4223e710d3fc31e78411 SHA-256: ff271612b742e99a7e76ea62c0572a11237354253b3f374433136a3b2ab19c2d
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.cc/123?keyword=answer+to+interpleader+complaint+california In PDF document text
    • https://nisutezobeta.weebly.com/uploads/1/3/4/4/134486685/jerotib.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/tipot.pdfIn PDF document text
    • https://sitiguzesamow.weebly.com/uploads/1/3/4/4/134401829/3840f55da0ea69.pdfIn PDF document text
    • https://zidabowejixu.weebly.com/uploads/1/3/1/1/131163559/tinaruzukoxogok_tirunom_menawixukujuz.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/difugibozukilikagubu.pdfIn PDF document text
    • https://pekedilude.weebly.com/uploads/1/3/4/3/134324883/5386854.pdfIn PDF document text
    • https://sazagirisama.weebly.com/uploads/1/3/4/5/134585928/natadezelak_pegudulozev_nukoxov_kugawekikivo.pdfIn PDF document text
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/rozebejakoraxema.pdfIn PDF document text
    • https://gavawujag.weebly.com/uploads/1/3/4/3/134370084/9309179.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9844/6231/files/pigefabixolerasevexox.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/minion_paradise_apk.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_off00005972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5972 5384 bytes
SHA-256: 5e35a7fbf9a575bf406e1cd4f941e03153959fb95449989eabd5bfe36d7d4209
font_01_sfnt_off00006bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBA 10688 bytes
SHA-256: 7248f355c6d65c7cd75512bb58fc997d6bb93ed4ec342aa4a5a747b6e1e67b8b