MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.
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=rhapsody+in+blue+clarinet+solo+sheet+music
- http://files.spinna.org/uploads/1/3/2/6/132681559/fc7610adbfa9de0.pdf
- https://cdn.shopify.com/s/files/1/0436/9219/5993/files/nitagozutiwajezuvitu.pdf
- https://cdn.shopify.com/s/files/1/0433/6415/5560/files/advanced_ankle_strengthening_exercises.pdf
- https://cdn.shopify.com/s/files/1/0433/6749/7880/files/17558176110.pdf
- https://cdn.shopify.com/s/files/1/0434/1995/9463/files/42012063075.pdf
- https://cdn.shopify.com/s/files/1/0427/9628/6111/files/72166658986.pdf
- https://cdn.shopify.com/s/files/1/0444/7895/5687/files/amelie_piano_easy.pdf
- https://cdn.shopify.com/s/files/1/0431/2711/1841/files/74072948947.pdf
- https://cdn.shopify.com/s/files/1/0429/2208/2460/files/35594764753.pdf
- https://cdn.shopify.com/s/files/1/0450/4797/1990/files/mipiroxexosemi.pdf
- https://cdn.shopify.com/s/files/1/0429/8362/0757/files/42644792668.pdf
- https://cdn.shopify.com/s/files/1/0429/0733/6867/files/xulewutewali.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000043d1.bin969868aba90b4f6c83c5e213ac7de4cde13f0dab0b3a85a68b16606fd9ac7048 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x43D1 | 5560 bytes |
font_01_sfnt_off0000568d.bin869090a74aa48ca001c2ded7b1509df0bb5997708070ff5015b448ff9f78a7af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x568D | 9668 bytes |
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