MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by both ML classification and ClamAV, with the latter detecting it as a phishing trojan. The file contains a large number of external links, many pointing to other PDF documents, suggesting a link farm or SEO manipulation tactic. One of the primary external links is to 'kuzutuzo.ru', which is likely a malicious domain.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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/award?keyword=biophysics+textbook+pdf PDF link annotation
- https://cdn-cms.f-static.net/uploads/4380086/normal_603e2a6a3e048.pdfIn PDF document text
- https://kavavori.weebly.com/uploads/1/3/4/0/134012315/bixidivejaz-mululapa.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4456114/normal_6002b45d959f3.pdfIn PDF document text
- https://wunovolal.weebly.com/uploads/1/3/5/3/135311751/zerewusofez-rakumajowixi.pdfIn PDF document text
- https://tewonubipudi.weebly.com/uploads/1/3/6/0/136016370/2909727.pdfIn PDF document text
- https://lewanodeb.weebly.com/uploads/1/3/4/8/134885095/tezabudazodadib_ranogazida.pdfIn PDF document text
- https://pejagefetem.weebly.com/uploads/1/3/0/8/130815482/gakoxeki-medowesu-lopul-ruferovawakafas.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495400/normal_5fec6e59f0441.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419847/normal_6038cd720e08f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380539/normal_5fe0b5a41c20c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4426676/normal_5fe47df8e9013.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454170/normal_60445c79a85a5.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/8ee686e8-9925-4e9d-8649-d8c559431b5a/tomtom_n14644_canada_310_reset.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7e5b735a-51eb-4bf7-972a-e45fbc511abe/674174939.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e717df25-ea94-4a3e-9860-b9300e9b26bc/what_pairs_with_rioja.pdfIn PDF document text
- https://s3.amazonaws.com/tobojelusiwi/20439860805.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/98257c0e-8a3a-484e-ba5f-2e9b548c871c/9014463215.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d03bc52-4c75-4902-83c0-c73b9ff59972/m50_gas_mask_filter_size.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5fab59e0-9257-4c97-9835-6b089750c9bd/maze_runner_book_4_summary.pdfIn PDF document text
- https://s3.amazonaws.com/zuvovoxigumuz/aprenda_ingls_online_aplicativo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/945c4fdf-60f1-42bc-896b-1a17830a2f72/nomiranimapa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e143456c-a631-4c51-b0c7-72d524a32d6f/sat_subject_test_math_2_percentiles.pdfIn 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_off0000e2d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2D1 | 5328 bytes |
SHA-256: efb49fe1a603de1ce10b3040510f0716c36f46bd882910df584a9c4e86841bc8 |
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font_01_sfnt_off0000f4ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4FF | 10740 bytes |
SHA-256: 83cfc5148a3a853b653548a0e2de843d09ce60b49c7b5d28599f33a1eb2c9b0e |
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