Malicious PDF — malware analysis report

Static analysis result for SHA-256 8938547bcbd510d9…

MALICIOUS

PDF

32.6 KB Created: 2020-09-20 03:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78f877d49e4152a56a261378122ac349 SHA-1: 29532b6ca66adae3b4d9c10252f6a6fa5b7a32e0 SHA-256: 8938547bcbd510d9a3c86ec31b871389768f46f40eaae5417dea91f1e6a282e9
184 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to disposable hosting or known redirectors, suggesting a link farm or phishing campaign. One prominent link, 'https://ttraff.club/wix?keyword=evolution+unit+review+worksheet+answer+key', is flagged as malicious. The document's structure and embedded links indicate an attempt to redirect users to malicious or spam content, likely as part of a phishing or SEO manipulation scheme.

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=evolution+unit+review+worksheet+answer+key In PDF document text
    • http://pazenume.bmemf.org.uk/uploads/1/3/0/8/130813786/5461073.pdfIn PDF document text
    • http://sibem.denaelovelifestyle.com/uploads/1/3/0/7/130739347/vavoselasupabelovore.pdfIn PDF document text
    • http://taxafax.mattresslandnb.com/uploads/1/3/0/7/130740066/sumedemofevuw.pdfIn PDF document text
    • http://files.twigtravel.com/uploads/1/3/2/8/132814468/nuwino_pasosele_zusawitis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2fadf7ef-2801-4eb5-b59d-fce8257a2680.filesusr.com/ugd/33c377_2624d4f0b885428abcd77263a406402b.pdf?index=trueIn PDF document text
    • https://42e1a8be-24fd-4302-ad79-d0d799bc444d.filesusr.com/ugd/8b97dd_ea777d60d9134264be5d233dc85dce85.pdf?index=trueIn PDF document text
    • https://1c85ff48-5206-433c-a985-a5e1cba79788.filesusr.com/ugd/23b571_6c7ca51a379a4bd78568587623b30dc0.pdf?index=trueIn PDF document text
    • https://ea6031e5-10f9-4e5e-8739-9d606332a058.filesusr.com/ugd/5f4192_468a3e338ef54c8ebdbc7bc3fe3226f0.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8217/6917/files/tutorial_de_ableton_live_9_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0802/files/guia_ilustrada_de_la_avifauna_colombiana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/83836230001.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

Related samples 2

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_off00004267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4267 5048 bytes
SHA-256: 7b3b0a8755424a1f91b42b07d3482b93841b00c7cd3c4b35e9eb79e87165caa8
font_01_sfnt_off000053a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53A7 10036 bytes
SHA-256: 4d8fdf93f62b690706fcb152ae65d0852acb146c424f35a84305bdb1aef48f59

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