MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.cc/wb?keyword=chemistry%20experiments%20high%20school%20pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links indicates an attempt to obscure the malicious destination by hosting them on seemingly benign platforms.
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=chemistry%20experiments%20high%20school%20pdf In PDF document text
- http://files.healthandculture.net/uploads/1/3/1/4/131407106/gisenu-jelalatagutul-busonifok-vupiwoju.pdfIn PDF document text
- http://panisivik.accesswellbeing.org/uploads/1/3/2/6/132680813/06a8b0ec2cff276.pdfIn PDF document text
- http://files.thehiveweddings.com/uploads/1/3/1/4/131482988/092e08f47098.pdfIn PDF document text
- http://files.delmarinelloart.com/uploads/1/3/1/4/131406369/revejape-tevozozaru-dezopufa-javijebetitigik.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/1/0437/1313/4741/files/bezalemiku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6482/6773/files/98988938020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6031/3768/files/24278157455.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7644/3557/files/temusalinepefegajilevafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0230/4408/files/tejuvalonupegegofepu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4441/3350/files/gikuze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4845/9673/files/wavupesepubonanavonake.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3462/4679/files/30492703849.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6843/1265/files/trazado_de_caldereria_boca_de_pescado.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5244/9435/files/renasaxijukaza.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6778/4864/files/78648615391.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6006/0567/files/43697467840.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6295/1074/files/7641927705.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_off000062ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62BA | 5432 bytes |
SHA-256: feaf583e6f42908179762e2939a6f60c5ecf9fd83dd5999ef48ed54979f4cc9c |
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font_01_sfnt_off0000751d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x751D | 10260 bytes |
SHA-256: 900af71d3430536ab054d5dfd057f7a862de16d61ee3380008e25469e5ca1855 |
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