Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b69113d61d998d…

MALICIOUS

PDF

45.6 KB Created: 2020-10-02 22:09:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 05dec9a2e94206a48465e54364385101 SHA-1: ce33e94c5d9b6e5edc38007fb1d9f501e8031607 SHA-256: e9b69113d61d998d3d9aeb40ccfeab84122b48fa2af6f876f8c1158dfaa3a7a9
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://cctraff.ru/strik?keyword=tamil+calendar+2020+muhurtham+dates In PDF document text
    • https://site-1036945.mozfiles.com/files/1036945/rusemopare.pdfIn PDF document text
    • https://site-1036902.mozfiles.com/files/1036902/jetujobasugipapabuganepop.pdfIn PDF document text
    • https://site-1040005.mozfiles.com/files/1040005/nadizimajinobinuvobumapij.pdfIn PDF document text
    • https://site-1036885.mozfiles.com/files/1036885/15207471880.pdfIn PDF document text
    • http://files.juliaschombergart.com/uploads/1/3/1/6/131606815/gigamulavezosexoma.pdfIn PDF document text
    • http://files.courseyfinancial.com/uploads/1/3/1/1/131163533/ec8a94ebe4f1441.pdfIn PDF document text
    • http://files.sarahjaneshangraw.com/uploads/1/3/1/3/131379045/gopudita.pdfIn PDF document text
    • http://xasaj.crosscuthardwoods.com/uploads/1/3/1/3/131398140/1056099.pdfIn PDF document text
    • http://files.redwooddogs.com/uploads/1/3/1/8/131856108/lajisoxov.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/78ef689d-861d-4a13-bc0c-a6f878760666/rukofepajubuvusunar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dcfb3c2-7dcf-4a3e-8554-d3186dc00504/tapomoxafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f8e5d3-2296-48ec-bf3c-d001f969895e/mefase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ede87b-1623-4ee7-a6f3-6b646f6a4c34/16096565101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b983a7f-ffe5-424f-9637-40ace5c5a6f6/bavuxerikomirubizusufef.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_off00006f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F46 5404 bytes
SHA-256: d2bd60e1d4525a186fa81937e1466cbb226282f86e4150e76f4a0ebcf90aa956
font_01_sfnt_off0000816f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816F 12904 bytes
SHA-256: 1f289c7b8b4e5cddddbc84cab77d4af9e333b175855ab80999cff5c918f605e9

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