MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass of external links, many pointing to Shopify-hosted PDFs, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text '12 hsc biology textbook pdf' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The ML classifier strongly indicated maliciousness.
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.com/pify?keyword=12+hsc+biology+textbook+pdf
- http://files.cornerstonepie.com/uploads/1/3/1/3/131398184/zetepamoj_safozixe.pdf
- http://files.firebirdbrewing.com/uploads/1/3/1/4/131437378/9780851.pdf
- https://cdn.shopify.com/s/files/1/0432/8721/6293/files/mesutegufesulefuni.pdf
- https://cdn.shopify.com/s/files/1/0432/0644/3163/files/97402642352.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/69303458590.pdf
- https://cdn.shopify.com/s/files/1/0435/5594/6655/files/57691233731.pdf
- https://cdn.shopify.com/s/files/1/0432/1227/5876/files/57251334944.pdf
- https://cdn.shopify.com/s/files/1/0440/8714/8709/files/vawamu.pdf
- https://cdn.shopify.com/s/files/1/0430/6065/8330/files/gimitowizabinap.pdf
- https://cdn.shopify.com/s/files/1/0432/8249/7701/files/2942053594.pdf
- https://cdn.shopify.com/s/files/1/0440/0214/8510/files/css_center_button.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/
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000071a7.bin74021568cf4204231ea13142bf00812989e83ab72683b700733265d30d96101f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71A7 | 5256 bytes |
font_01_sfnt_off0000839c.bin99bca359efd2e55fe1a36cebae75bb63f980a4bdd4d96fc9f3f577b991de170a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x839C | 10008 bytes |
font_02_sfnt_off0000a5e6.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA5E6 | 4324 bytes |
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