MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a deceptive lure related to 'English conversation test for beginners pdf' which, upon inspection, redirects to a known malicious domain. The document body and heuristics indicate a link farm designed to host numerous PDFs, likely for SEO poisoning or to distribute malicious links. The primary malicious URL identified is https://ttraff.com/wb?keyword=english%20conversation%20test%20for%20beginners%20pdf, which is a critical finding.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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/wb?keyword=english%20conversation%20test%20for%20beginners%20pdf In PDF document text
- http://files.acappellakentuckiana.com/uploads/1/3/0/8/130815095/numawamexizatex-nijufebifalegag-xidaga.pdfIn PDF document text
- http://files.davemcdermand.com/uploads/1/3/2/6/132695361/faxevedepu.pdfIn PDF document text
- http://files.misfitcrusaders.com/uploads/1/3/0/8/130814672/634f8e.pdfIn PDF document text
- http://files.noswfoundation.org/uploads/1/3/1/0/131070527/6085821.pdfIn PDF document text
- http://files.clairestephstudio.com/uploads/1/3/0/9/130969386/vigif.pdfIn PDF document text
- http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdfIn PDF document text
- http://files.healthqueenavis.com/uploads/1/3/0/7/130776266/1982664.pdfIn PDF document text
- http://files.bullbearkidsbooks.com/uploads/1/3/1/4/131455463/84515.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://xerexaxagase.files.wordpress.com/2020/07/9429041026.pdfIn PDF document text
- https://sonizoziva.files.wordpress.com/2020/07/61056868645.pdfIn PDF document text
- https://rejogivowub.files.wordpress.com/2020/06/70437521730.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004b4f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4B4F | 5364 bytes |
SHA-256: b0aae774b6e587fa791391b48c78da0fded76f5618cd4a0728b98e905dd8de19 |
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font_01_sfnt_off00005d7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D7A | 9896 bytes |
SHA-256: da5ebd445ea2a0fe73c2e8cf05ef04e8271acf3495286f2a914a7cd3e1bfcfe6 |
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