MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body is heavily obfuscated, but the presence of 'algebra worksheets ks3' suggests a lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the intent to create a link farm, likely for SEO poisoning or to distribute malicious content via benign-looking Shopify URLs.
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/pify?keyword=algebra+worksheets+ks3 In PDF document text
- http://files.svcmblackmountain.org/uploads/1/3/0/7/130776594/pavobodakin_woxumisebosipa_wawerusuroxu_gufeb.pdfIn PDF document text
- http://files.jflesher.net/uploads/1/3/0/8/130874610/pavizezus-moduge-bopetolalub.pdfIn PDF document text
- http://files.yeagershairstudiospa.com/uploads/1/3/0/7/130739069/8593748.pdfIn PDF document text
- http://files.sgionet.com/uploads/1/3/0/8/130874413/zujojunejiguwimurob.pdfIn PDF document text
- http://files.learninglives.co.uk/uploads/1/3/1/3/131380618/362727b5.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/1/0427/7207/0556/files/vijexilijodetuxekepoluw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3975/8235/files/vusuremawosujarowapur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6536/0034/files/fajupewomuvux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9199/2481/files/63405174688.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8032/7070/files/20296967370.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0922/0501/files/34488852674.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4258/5241/files/zufegidogeduzi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8835/4207/files/podisejivelepabovovepimub.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1858/3192/files/jumaluzabatadodufivuwiwin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7541/2902/files/5849975880.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2969/1558/files/noveb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7317/4680/files/17788906437.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2008/2590/files/famifezolijiposedidibig.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_off00005f1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F1C | 5032 bytes |
SHA-256: dafe520c572a58ca3adfabfe19440ec447f3e2fc95d51aefd94352ddd8adb083 |
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font_01_sfnt_off00007061.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7061 | 9904 bytes |
SHA-256: 92094eae009f02d25bb32533891dd8d6a79d6ebd25032d118d1aa8d098ac3b02 |
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