MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for SEO link farming. The document body, though heavily obfuscated, contains text suggesting a lure for educational materials. The ML classifier strongly indicates maliciousness, and the PDF structure includes multiple links to external resources, some of which are known malicious redirectors.
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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.cc/wb?keyword=worksheet%20english%20for%20year%202 In PDF document text
- http://tiwejutuf.ditewigmorris.com/uploads/1/3/0/7/130739098/2590383.pdfIn PDF document text
- http://files.decibel-doo.com/uploads/1/3/1/4/131408942/9687912.pdfIn PDF document text
- http://gabapake.bigcreekantiquemall.com/uploads/1/3/1/8/131856149/firokafuwod_retiwumivum.pdfIn PDF document text
- http://wetaxilev.lilymariecreative.com/uploads/1/3/0/8/130814328/tozetareromoz.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/1/0432/2361/3595/files/karezulemomopigeli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4568/2332/files/anglican_hymn_book_common_praise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1222/6202/files/noaa_severe_weather_storm_reports.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2795/4853/files/biomass_briquettes_calorific_value.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4146/2174/files/28685230414.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4133/9045/files/adverbs_of_manner_exercises_with_answers.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0935/1585/files/91237625054.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2815/9381/files/fish_coloring_sheets_for_adults.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/4956/1757/files/integriertes_nderungsmanagement.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7594/5113/files/7150824779.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/5981/7117/files/problem_solving_sheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8100/6244/files/45925882383.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0490/3073/files/lurofikibaviduriwibisexe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3626/2052/files/abaqus_theory_manual_6._14.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_off00005ecb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5ECB | 5340 bytes |
SHA-256: c42315a3f83ac9b3a7b5332be33e9681a9be70d44fb82f95f1e8b73f086f5cf6 |
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font_01_sfnt_off0000710d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x710D | 10184 bytes |
SHA-256: a7bf4210c866b8f742a0c32d61be8f836eb46d380da6ba86e04a36f5e9835213 |
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