Malicious PDF — malware analysis report

Static analysis result for SHA-256 70211ee9e0494aa2…

MALICIOUS

PDF

45.0 KB Created: 2020-11-01 22:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2eaf26bcc007ff00a3f1805b3f269f42 SHA-1: d7463ef80f9515979af485652bf69b7d80f8671a SHA-256: 70211ee9e0494aa27a278a8aaad30abfbf18fec2994adfa3048c3125275b7dbb
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.link/123?keyword=klein+cain+high+school+map'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a harmful site, likely as part of a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/123?keyword=klein+cain+high+school+map In PDF document text
    • https://kisogegexene.weebly.com/uploads/1/3/4/3/134374262/zopadukurasalibabef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5f967d7920950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_5f9d194aca173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389606/normal_5f8e255626aeb.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/kakiwipukof_babinapowenuzad_muxepurerazefef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f989aa48c76e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_5f8a9916015a7.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/zebetuwi.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/1/0504/0776/8251/files/41592637155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7918/1500/files/widujekatexawumivut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1032/5150/files/windows_api_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6957/7656/files/tropico_de_capricornio_henry_miller_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6669/5071/files/harvard_business_school_case.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_off00006465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6465 5220 bytes
SHA-256: 216befc4a745b87d758d039c6270f19aefe00935f0114d31ac348070dc3f8054
font_01_sfnt_off0000760f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760F 15848 bytes
SHA-256: dfaf45d3bb98a3b0f6bd787d851e8e63ea65f3ec61cbe3738c65d9eb50526b5e

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