Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb09feb4f737473e…

MALICIOUS

PDF

48.3 KB Created: 2020-09-21 19:20:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 0137d0a6ed16add012a177732616541f SHA-1: 2c673f65506f989494f3ff3a39856d19b7e3b8bf SHA-256: eb09feb4f737473ec57aec0e0b1e89a596b3c58fd17ec5493c2ac24483d8b205
184 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm or phishing lure, with numerous embedded URLs. One prominent URL, https://ttraff.com/wix?keyword=marisa+coulter+daemon+separation, is identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent, likely to direct users to harmful content or phishing sites.

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.com/wix?keyword=marisa+coulter+daemon+separation In 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/1/0429/8407/9523/files/budareroxoregenevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/qantas_airways_limited_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/age_of_exploration_technology_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/dojosovixikudumodeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/scope_and_sequence_template_nsw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0261/1100/files/21192906781.pdfIn PDF document text
    • https://f9b5a244-0927-4b8a-8710-71c9b635028d.filesusr.com/ugd/136d3d_71719af32abb498f8da637ab1ec6103a.pdf?index=trueIn PDF document text
    • https://5d446c6e-1419-410a-859d-e80b826728d8.filesusr.com/ugd/5926b4_cbb3e43fa51f407ebddc9c16b4452bb5.pdf?index=trueIn PDF document text
    • https://31ceade9-22f4-4304-9508-624cab5e6ea5.filesusr.com/ugd/7cefa9_090a4578b52d4b2bb5451b796e26f765.pdf?index=trueIn PDF document text
    • https://61bc6a7d-6746-44c3-884d-38a9322ba0d1.filesusr.com/ugd/4c1554_a08b9d600b024d35b928548b51a866d2.pdf?index=trueIn PDF document text
    • https://483c0739-7fc4-4429-b95f-2e94f81c31ad.filesusr.com/ugd/9bd8c3_efbce7ed4ad14bd893a6d8e2f22fa30f.pdf?index=trueIn PDF document text
    • https://86145dbc-0bd9-4e3f-ba31-6d1ecb43ba33.filesusr.com/ugd/227d0f_28fc669d737d4677a4f6240ca7e52c80.pdf?index=trueIn PDF document text
    • https://1c9f22c9-3ca1-41a3-b345-a28420a64c4b.filesusr.com/ugd/7a13df_bf741a32c06c4ff5a6e98aee20c8210c.pdf?index=trueIn 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_off00007d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2D 5224 bytes
SHA-256: d1a0880fcfd543fc41703c2e173c2125ce152d25e25ac30c380c768380907bbd
font_01_sfnt_off00008ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE3 11072 bytes
SHA-256: 88f3884bf5441a466b52f0e33a4c1deadf8e388bfea0938192f5929a31728dbb

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