Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e81cbce3b543507…

MALICIOUS

PDF

44.0 KB Created: 2020-09-17 02:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b1c7f419fd7afcc967af514810cf641 SHA-1: b4189b749f787fc98490cc55995cd18e1d8e7a4a SHA-256: 5e81cbce3b5435071dfa5cac99719a3de72f78acdf65c71e5ed2b431a90f2e12
184 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to various domains, many of which are identified as part of a link farm. One prominent URL, https://ttraff.club/wix?keyword=barnett+vortex+compound+bow+instructions, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and others associated with the link farm, suggesting the primary purpose is to direct users to potentially harmful external 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=barnett+vortex+compound+bow+instructions In PDF document text
    • http://xotut.ittakesavillageys.com/uploads/1/3/0/9/130969130/5053889.pdfIn PDF document text
    • http://miket.barbadoscanadafoundation.com/uploads/1/3/1/8/131871787/pamikadumu.pdfIn PDF document text
    • http://files.michigan-alpacas.com/uploads/1/3/1/4/131453365/vafifosos.pdfIn PDF document text
    • http://files.hogwallermudbog.com/uploads/1/3/0/7/130739542/8575803.pdfIn PDF document text
    • http://lojam.crookcountylibrary.org/uploads/1/3/1/4/131408618/xedemur.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/1/0432/4130/8320/files/2297120908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/28325147158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2566/7995/files/muritek.pdfIn PDF document text
    • https://09a7a560-6d21-4e68-868e-5fcd4f05d242.filesusr.com/ugd/221eaa_7b6fd2c045614f5ba5ae2fb813dceb98.pdf?index=trueIn PDF document text
    • https://dea66520-d3a5-430b-b892-122f19b9e3ae.filesusr.com/ugd/384ea4_472a3b0799af4708b7b1afcdf1937112.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 4

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_off00006af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF2 5596 bytes
SHA-256: 8c5eef29ba208d5d189a9bf4192853fed39ca701f60ccfbfd9ed177c7c228425
font_01_sfnt_off00007df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF4 11012 bytes
SHA-256: bb91e033a32a27fa41a80c767248d64d04c5e54f9fbc39865ebe9be6e7cd3132

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