MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm or SEO manipulation tactic. One of the extracted URLs, 'https://xajibur.ru/123?utm_term=don%2527+t+worry+be+happy+music', is flagged as unknown reputation, suggesting a potential malicious destination. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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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://xajibur.ru/123?utm_term=don%2527+t+worry+be+happy+music PDF link annotation
- https://static.s123-cdn-static.com/uploads/4445892/normal_5fddd0c90151b.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379606/normal_5ff035fd57cfc.pdfIn PDF document text
- https://cdn.sqhk.co/zubavagi/YPK7Cib/13202423200.pdfIn PDF document text
- https://cdn.sqhk.co/rogudokives/jhgfWdL/suvakaj.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/6ea361a1-ab45-47a6-b825-966879fbcb27/summary_of_second_class_citizen_chapter_11.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f72095ce-323b-47ce-8444-2f089a89668c/17497081166.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/53270aaa-aaa1-493e-b6e8-73b6e73856e9/inteligencia_emocional_definicion_y_caracteristicas.pdfIn PDF document text
- https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_b0b9cb5eb2954690a7e3152b977dd5fb.pdf?index=trueIn PDF document text
- https://2e8e3215-33bf-4fe1-bc67-b38dac560527.filesusr.com/ugd/269bb8_4766a6e523504a07ab0e77e5685204c4.pdf?index=trueIn PDF document text
- https://39c1d623-eccb-4af0-a86a-15328a2d61f9.filesusr.com/ugd/3cb6cb_4faa2ca6efe744daa3a6a1bb69b149ac.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/ee8d467b-741f-4d9e-8be8-6757083fba3d/41639758050.pdfIn PDF document text
- https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_979edd809c7c4e39975b3b34d3fb7064.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/52493e67-6fea-4479-9f45-57c850fa572d/the_scientific_approach_to_intermittent_fasting_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7dc87229-488f-4bed-a78e-6238335c2265/xerogalaxufe.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/45a6f4a9-0f84-4237-a9b5-f5e8e58f2908/defending_jacob_season_1_episode_7_full_episode.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e75256a1-cc2f-4e80-8a73-5e387fb9bbcc/sukosate.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc122301-01e6-47af-838a-9058cbf1e68d/23352543382.pdfIn PDF document text
- https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_e63381bcb6ce4de5af9ff15a69d0ebfc.pdf?index=trueIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010138.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10138 | 5508 bytes |
SHA-256: 42124bd11db75bec36480bf7cc65545249d49d335543cb5a23e56d9f2dc5a469 |
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font_01_sfnt_off000113e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113E5 | 12000 bytes |
SHA-256: ee427e9efdf776976320f6af2dd25439269f4fff53f164e376ec56d15a3c11d0 |
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