Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb3ff51b3ed481b1…

MALICIOUS

PDF

43.1 KB Created: 2020-09-17 17:38:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 471585b4e7cd8810a64fdc029405a2c3 SHA-1: 361df33f6ff1e5d341d297402f931cf958bf4961 SHA-256: eb3ff51b3ed481b12829f865c9e9110079b8ce20aedd59cb84b7e2744384c8e5
184 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a redirector. One of the primary links directs to 'https://ttraff.club/wix?keyword=wuthering+heights+setting+analysis', which is flagged as a malicious redirector. The document body itself is largely obfuscated but contains metadata suggesting it was generated by wkhtmltopdf, and includes the same suspicious URLs found in the heuristics. The overall pattern suggests an attempt to manipulate search engine results or redirect users to malicious content.

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=wuthering+heights+setting+analysis In PDF document text
    • http://files.twohugos.com/uploads/1/3/0/7/130738993/3e447d2c1b5e91.pdfIn PDF document text
    • http://files.lazioreview.com/uploads/1/3/2/6/132681062/5191c39.pdfIn PDF document text
    • http://files.dreamgirlpublishing.com/uploads/1/3/1/4/131407278/8717820.pdfIn PDF document text
    • http://files.tgmwindsteppers.com/uploads/1/3/1/6/131606046/madamaroverumix-wokatojub-lepugogivu.pdfIn PDF document text
    • http://files.southjeffersonrescue.org/uploads/1/3/1/4/131438324/6925725.pdfIn PDF document text
    • http://files.bewellinstitute.org/uploads/1/3/0/7/130740297/gavezawenaw-jumebo-wudemesup.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/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6619/6122/files/voxamikasagifevujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/lugixuxolixatugaxisaguz.pdfIn PDF document text
    • https://341f0071-18b3-42cf-96fb-52f8e0bd44ab.filesusr.com/ugd/6e13d9_9882b62bf556468e84a818492e04b636.pdf?index=trueIn PDF document text
    • https://9076f5a4-f354-40e1-a06a-b1267c227508.filesusr.com/ugd/964009_44a4792252264b2e8daa51551b115c86.pdf?index=trueIn PDF document text
    • https://d6d46862-e882-488b-a05c-528d3ff51330.filesusr.com/ugd/83f04e_bb1d8f13a0274061a24b00c5668c7342.pdf?index=trueIn PDF document text
    • https://1d87a6aa-320e-4c8c-bae8-d2d74b67a0c9.filesusr.com/ugd/ad2ade_c94a115e956c47f8b4929e99fd6c9b7d.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 6

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_off00006b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8A 5060 bytes
SHA-256: 771e2f92a29be6d9754beca04cc45e46ce3f95bdbdac4963fe3480d7f3cf1f7a
font_01_sfnt_off00007cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD0 10312 bytes
SHA-256: 8516264e84e0d23972c5ff3c268197182c2d21bd9989a4ce78c8b38bd0c41a6e

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