MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to Shopify domains, which are likely part of a link farm designed to obscure the ultimate destination. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is used to deliver the final payload. The ML classifier strongly indicated maliciousness. The document body text, though heavily obfuscated, appears to be a lure for a book download, aligning with the link farm technique.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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.ru/pify?keyword=basic+economics+thomas+sowell+pdf+download
- http://files.angelafiori.com/uploads/1/3/1/4/131409090/3511276.pdf
- http://files.mosaicdownsyndrome.com/uploads/1/3/2/7/132741035/5866938.pdf
- http://files.moissaniteny.com/uploads/1/3/0/9/130970008/rokomonusufewem.pdf
- http://files.carolinaspecialtyproducts.com/uploads/1/3/1/0/131070618/2e479.pdf
- https://cdn.shopify.com/s/files/1/0428/6251/0236/files/94843506505.pdf
- https://cdn.shopify.com/s/files/1/0434/8346/3832/files/gorijiwavezak.pdf
- https://cdn.shopify.com/s/files/1/0431/8996/0861/files/4013009862.pdf
- https://cdn.shopify.com/s/files/1/0434/4800/8866/files/vusorisivis.pdf
- https://cdn.shopify.com/s/files/1/0432/6667/0745/files/titapogawuv.pdf
- https://cdn.shopify.com/s/files/1/0431/5453/8658/files/81522337671.pdf
- https://cdn.shopify.com/s/files/1/0428/2168/1315/files/dixejijuwifunov.pdf
- https://cdn.shopify.com/s/files/1/0438/1786/1277/files/77088920232.pdf
- https://cdn.shopify.com/s/files/1/0434/5197/3794/files/fatepun.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- https://cdn.shopify.com/s/files/1/0434/4800/8866/files/vusori
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d08.bin0c633c341c82d7bb1bf3eecf56028addda2b1b09b2adbe740f680d5132af4a7e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D08 | 5228 bytes |
font_01_sfnt_off00006ead.bin4fcaa2c402c98694f6d32f614c191255022803f07f4f1c21899b333be7f831f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EAD | 10476 bytes |
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