Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d7c728e85bedef…

MALICIOUS

PDF

49.4 KB Created: 2020-11-02 16:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 91a0cdb0607a972fa7a6b2cb918ef5e9 SHA-1: effcf69127c1cee83ef785d431bb9332af330826 SHA-256: 02d7c728e85bedefb79c63fc943dccf880b151f225fe2b30937ef50378f0cfd2
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains a large number of embedded links, many of which point to external PDF documents hosted on various domains. One of the embedded URLs, 'https://ttraff.com/123?keyword=summary+of+luke+chapter+16', is identified as a known malicious redirector. The document's structure and the presence of numerous links suggest it is designed to lead users to potentially malicious content or phishing sites.

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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/123?keyword=summary+of+luke+chapter+16 In PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/wuwoxop_zelatogib.pdfIn PDF document text
    • https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/botel.pdfIn PDF document text
    • https://kileligujet.weebly.com/uploads/1/3/4/4/134457719/2d54e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f9f337ce95f0.pdfIn PDF document text
    • https://wajifisawebe.weebly.com/uploads/1/3/4/4/134480175/xavebo_xugaduxokogex_ludaneledejetux.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/7232995.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/7339423.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/031eba2e-6ce8-46b6-beaa-4b8bdd15fa9a/zusofuzok.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/butcher_block_countertops_cost_to_install.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/damoxosum.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/nozupofekoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c064235-d26c-4db2-922f-d4d60c92d434/terapia_de_grupo_madrid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3d762cf-3e69-4c6d-91a9-e15c80eb7f4b/area_of_triangle_word_problems_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/rapepur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cc4e23f-60c1-4f64-9db1-4f22b30121d2/dragon_ball_z_la_resurreccin_de_cell_cuando_se_estrena.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a8a921d-078c-4711-8ae3-18f03de9df4f/janinigenabeduburu.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_off0000820a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820A 5552 bytes
SHA-256: bef16f61f40d68e64d9d185c26a13d8b1c64d2b01b2d818b112a02fda1b10aec
font_01_sfnt_off000094d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94D1 10612 bytes
SHA-256: 1bd48ed014f6d009e10e2ea3eebe0b7bd93c1b7f69032c55a6a97c00a683c4cf

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