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, identified as a link farm. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the presence of numerous external links, including one pointing to 'kuzutuzo.ru', suggests a potential for redirecting users to malicious sites or for SEO abuse. The document body is heavily obfuscated and unreadable.
Machine Learning
- Nyx PDF Classifier malicious score 0.9967
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://kuzutuzo.ru/wix?keyword=tivi+lcd+led+lg+55um7300pta.atv PDF link annotation
- https://cdn-cms.f-static.net/uploads/4485695/normal_601b9af94a13e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412379/normal_5fd828621c57e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408195/normal_6023f0a40a5d7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466675/normal_6012db1f0ee03.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4466376/normal_5ff288fb3f775.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373281/normal_5fe7e20773e10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393485/normal_5fe8e2c45cc52.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445750/normal_5fce77aa3a3f0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421641/normal_5fd0ed2bc2d29.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413567/normal_60465e46e3d12.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460463/normal_601b030791eb9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503874/normal_5fcbc19df0892.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4479674/normal_6005a85b0a30f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495059/normal_5fcd3c389fc44.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://najusibajeful.rf.gd/48_bus_schedule_sunday.pdfIn PDF document text
- https://s3.amazonaws.com/dinilederu/fuentes_de_informacion_audiovisuales_ejemplos.pdfIn PDF document text
- https://ecf1b359-4982-44d9-836f-7e6f5fec4aa1.filesusr.com/ugd/da15c8_817952e6d2854275a63fb778271a6f19.pdf?index=trueIn PDF document text
- http://vozapubivazub.rf.gd/how_to_win_game_pigeon_chess.pdfIn PDF document text
- https://s3.amazonaws.com/fopalew/boxejemewufu.pdfIn PDF document text
- http://muvaxuzuf.rf.gd/whatsapp_video_tik_tok_mp4.pdfIn PDF document text
- http://fasokefukolu.epizy.com/78632142865.pdfIn PDF document text
- https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_8ca995198c8c4e489742d4ff1d344cb9.pdf?index=trueIn PDF document text
- http://gejonutopufone.rf.gd/nogugawekukifilegoguka.pdfIn PDF document text
- https://c18d9829-3add-4afa-bc87-35007fe3998a.filesusr.com/ugd/70c1ec_3eb82cdb9cee41c1bc0017f64306c134.pdf?index=trueIn PDF document text
- https://4a31e3f8-49e3-4331-b1a9-c0bb7a6b9dbc.filesusr.com/ugd/599f1c_e9cda2c19d3c4921a22a1f512b3db4d5.pdf?index=trueIn PDF document text
- https://12350a4d-732a-4148-85a7-4fa27f2a77ec.filesusr.com/ugd/17beed_ccbe14e6025548a093cf1a425603a805.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_off0000f198.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF198 | 5668 bytes |
SHA-256: e6a3268b365c3382ceb6070873b903416215284f61a7346f3fcc9de7d0aa0d44 |
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font_01_sfnt_off000104e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104E8 | 22836 bytes |
SHA-256: 694ae1c699074252ade39c2398f1ff31ebc062843b87a49c34c10745577ce5fb |
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