MALICIOUS
194
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 of which point to SEO-optimized PDF files hosted on various domains. The primary link redirects to a URL that appears to be an SEO redirector, likely used for traffic generation or phishing. The ML classifier strongly indicated maliciousness, and the structure suggests a link farm designed to attract clicks under the guise of educational content.
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=angles%20in%20a%20triangle%20worksheet%20ks3%20pdf In PDF document text
- http://files.moenada.com/uploads/1/3/1/6/131606395/gosuwawegumuto.pdfIn PDF document text
- http://files.gainzadesign.com/uploads/1/3/0/9/130969809/6581120.pdfIn PDF document text
- http://files.mairibudreau.com/uploads/1/3/0/7/130776864/ziwawajobigogefivane.pdfIn PDF document text
- http://files.lydiamartinstudio.com/uploads/1/3/1/6/131606144/652ffecfed11.pdfIn PDF document text
- http://files.derekleebarton.com/uploads/1/3/0/8/130814189/cc6cb6.pdfIn PDF document text
- http://files.avienteconsulting.com/uploads/1/3/1/6/131606113/sapakepewejoxelirigi.pdfIn PDF document text
- http://files.nnhst2.org/uploads/1/3/1/3/131379612/lufuxofuwusuwufaposi.pdfIn PDF document text
- http://files.westernwc.info/uploads/1/3/0/9/130969300/9471533.pdfIn PDF document text
- http://files.andrheagoertzen.com/uploads/1/3/0/7/130775497/9073437.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://notetel.files.wordpress.com/2020/07/wazigunaves.pdfIn PDF document text
- https://pojupemi.files.wordpress.com/2020/07/kolopowarujezamameneripi.pdfIn PDF document text
- https://muvegotapega.files.wordpress.com/2020/07/sebele.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bizisumexu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vasopamomakazemujavinis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007c83.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C83 | 5400 bytes |
SHA-256: 4b881b4c69b17b9a5682decd2532640e8ad208734c71619f81c29fbdb65c8b69 |
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font_01_sfnt_off00008edf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8EDF | 3128 bytes |
SHA-256: 2e52ea5bf11b468482129af2e83ee8972aa212a59871fb129d144b1b3f5c7b19 |
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font_02_sfnt_off00009ba3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BA3 | 13720 bytes |
SHA-256: 14719ff955f44593b2405eae04a9f3f194f5fa3b836adec5254b6381084c5231 |
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