MALICIOUS
152
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.ru'. The document body, though heavily obfuscated, includes the same URL and text suggesting it's a lure for exam-related content. The presence of numerous other PDF links, many benign, indicates a link farm strategy. 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.ru/wb?keyword=trigonometry%20questions%20and%20answers%20for%20ssc%20exams%20pdf
- http://ganatik.mingateachers.org/uploads/1/3/1/4/131437657/3437961.pdf
- https://cdn.shopify.com/s/files/1/0432/3082/2555/files/ejercicios_para_aprender_ingles_gratis.pdf
- https://cdn.shopify.com/s/files/1/0432/0801/6027/files/proyecto_ascensor_hidraulico.pdf
- https://cdn.shopify.com/s/files/1/0432/1991/0813/files/16252977434.pdf
- https://cdn.shopify.com/s/files/1/0436/7548/4313/files/jepowoxapuxowajurewi.pdf
- https://cdn.shopify.com/s/files/1/0436/0683/5358/files/fajukaferolezovunakomuro.pdf
- https://cdn.shopify.com/s/files/1/0427/4877/2508/files/28951174409.pdf
- https://cdn.shopify.com/s/files/1/0433/6815/3239/files/6064889299.pdf
- https://cdn.shopify.com/s/files/1/0430/5757/8138/files/texas_caviar_nutrition_information.pdf
- https://cdn.shopify.com/s/files/1/0435/6295/9006/files/fopujowezatuwofavetilazid.pdf
- https://cdn.shopify.com/s/files/1/0433/2378/5370/files/patoruvubivodig.pdf
- https://cdn.shopify.com/s/files/1/0437/4927/7845/files/catia_manufacturing_tutorial_book.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_off00005d31.bin71d92ea6138d3cd03f04c4b165b6be093716d43c980f74a8b09045c552f13294 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D31 | 5780 bytes |
font_01_sfnt_off000070db.bin651b1121d45f3e72b3222410f1372fb2b18d9fe3f9352e09e8b134d9c9d4acea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70DB | 10528 bytes |
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