MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a mass of external links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=scholastic+teaching+resources+pdf', suggesting a lure to disguise malicious activity as legitimate educational content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of a phishing or malware distribution attempt.
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/wix?keyword=scholastic+teaching+resources+pdf
- https://static.usrfiles.com/ugd/ce14f3_91b1fb81a9e14444bb1023190104064e.pdf
- https://static.usrfiles.com/ugd/b8c837_25bc10c4aeab49bfb623038ca7ad96a6.pdf
- https://static.usrfiles.com/ugd/1b8612_263ad9dbe9a0413f903141076ac463c4.pdf
- https://static.usrfiles.com/ugd/b8c837_bb76e93294e649dda410835ba43541f8.pdf
- https://static.usrfiles.com/ugd/61b8bf_0530409089364c4e9d9980e63d75aef7.pdf
- https://static.usrfiles.com/ugd/a1fb72_f397d6fa4f0a43409a6f33716608676b.pdf
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/convertir_de_a_word_editable.pdf
- https://cdn.shopify.com/s/files/1/0428/4832/1702/files/41017946067.pdf
- https://cdn.shopify.com/s/files/1/0430/8900/2645/files/cardiovascular_physiology_multiple_choice_questions_with_answers.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/split_files_free_software.pdf
- https://cdn.shopify.com/s/files/1/0458/1448/1062/files/7811496667.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_off00004bd1.bin1144ece3209222dd15f135ffaedf865f18e48dc6dbca042c3cbbeb98922bb85a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BD1 | 5400 bytes |
font_01_sfnt_off00005e10.bin2d73dac21e0d01c9ad751917c708474a485a9d5901c3c012780f13432f58cb86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E10 | 10548 bytes |
font_02_sfnt_off00008216.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8216 | 4324 bytes |
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