Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f054855f4445a9…

MALICIOUS

PDF

35.1 KB Created: 2020-09-18 12:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f93a3096f576dbd193be9057eab7ed5c SHA-1: 177192b0eb3f3d6a78928b945ec9d1a39f3d6360 SHA-256: 26f054855f4445a9db115de3bc312b57bf32b6077d8dfa2843229105af559e5c
184 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a malicious site. The document body also contains numerous embedded URLs, many of which point to benign content, but the presence of the malicious redirector link and the ML classifier's high confidence score indicate a malicious intent. The document appears to be a lure for a phishing or malware distribution campaign.

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.club/wix?keyword=heartburn+nora+ephron+pdf+download In PDF document text
    • http://files.4burlingtonwoods.com/uploads/1/3/0/7/130775866/duwizifenej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://948aed58-0344-4283-8033-d1006a2d0864.filesusr.com/ugd/904a8b_a22e36745781457d9c06482457af367e.pdf?index=trueIn PDF document text
    • https://b19b2e4a-b5e5-4b4e-b81e-1ac400ff9e92.filesusr.com/ugd/a4c1fa_1bd617a35da94bb29d76d831750a5a01.pdf?index=trueIn PDF document text
    • https://97df7d36-fdba-4535-80cf-39e13a00d3b5.filesusr.com/ugd/fd30ac_e236d928e032474aa1178e8fd06e609a.pdf?index=trueIn PDF document text
    • https://a533d6bc-1fce-4ad9-bb0e-5f4ae8647fb2.filesusr.com/ugd/fedf23_3d7caff376f742e79ce99173692dae61.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0333/6088/files/fekuwigobibunifetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6796/5339/files/what_is_pellon_fabric_used_for.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4493/6599/files/tametazosodorufezudibabir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/excel_spreadsheet_checklist_template.pdfIn PDF document text
    • https://a5c38ddf-43ca-4549-8484-ddef49d13078.filesusr.com/ugd/e1c37d_85c1b078edc44d7185901233230f3143.pdf?index=trueIn PDF document text
    • https://863c2005-6d9a-4261-be8f-79d41cbe9c2d.filesusr.com/ugd/704f6c_97eb2a7519b04fd5985e53d6b4d6e57c.pdf?index=trueIn PDF document text
    • https://7753b01d-5d35-4508-ab6c-1e4ac6ee1199.filesusr.com/ugd/3db607_6b7bb5ee9846435c9638faca8b8508fa.pdf?index=trueIn PDF document text
    • https://81cd5016-7b39-4344-8088-159db44858c2.filesusr.com/ugd/debdc1_20edf29b82fd4fdbb1c8e9b717b59a21.pdf?index=trueIn PDF document text
    • https://6d82f2f6-2ed7-4bc1-af0a-b5e93732eb17.filesusr.com/ugd/e1a791_f81979714dc64439ae1da8dde988f889.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA2 5144 bytes
SHA-256: af8d04b33855bce6b9b39c4473535f3162fb2f35e45084a3be76aae236593f5c
font_01_sfnt_off00005e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E28 9744 bytes
SHA-256: ac336213ca88c014e367fc8b6bd9317e600b9034e4eb4e7b657b5921e5e0327c

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