MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The embedded URL `https://jottigo.ru/123?utm_term=ielts+writing+task+1+sample+format` suggests a phishing or credential harvesting attempt disguised as an IELTS writing sample. The PDF also functions as a link farm, directing users to numerous other PDF files, potentially for further exploitation or to obscure the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://jottigo.ru/123?utm_term=ielts+writing+task+1+sample+format PDF link annotation
- https://cdn-cms.f-static.net/uploads/4366041/normal_5fd9584caddc0.pdfIn PDF document text
- https://vabukoworap.weebly.com/uploads/1/3/4/7/134721260/bupalagij.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4530171/normal_60b9b44a04596.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415519/normal_6040501b36951.pdfIn PDF document text
- https://kisezuxuromo.weebly.com/uploads/1/3/0/7/130776201/8aae5e1b1287.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369901/normal_5fcee68e72c98.pdfIn PDF document text
- https://solekavugixe.weebly.com/uploads/1/3/3/9/133999951/fivapuve_lalezo_ridaxim.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479451/normal_606c2fb272eaf.pdfIn PDF document text
- https://botefajom.weebly.com/uploads/1/3/4/6/134690565/modujet.pdfIn PDF document text
- https://fitabidik.weebly.com/uploads/1/3/0/7/130776693/febujipomiwaga.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415544/normal_5fd7a293d64e8.pdfIn PDF document text
- https://juramezuvuro.weebly.com/uploads/1/3/5/9/135956704/e188cc.pdfIn PDF document text
- https://sapemeke.weebly.com/uploads/1/3/2/8/132814969/1979324.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4500692/normal_6062453c96689.pdfIn PDF document text
- https://jovawovifo.weebly.com/uploads/1/3/4/8/134883275/titesopibuwiwi-rumijusatok-dedasuf.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/b534176d-daaa-442c-b906-b13daf1d810a/how_to_make_papaya_seed_oil_without_oil_press_machine.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3d936e14-836d-4c76-a7e1-74693933a11c/21770187381.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bacad5be-2a06-475a-8c95-830edd5a2c42/rinnai_electric_gas_heater_prices_in_pakistan.pdfIn PDF document text
- http://komogabovuwa.pbworks.com/f/onlinemeded_intern_guide_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c04afd1e-6530-4da2-ba2a-99fd023d3ef2/unidad_1_etapa_3_actividades_para_todos_vocabulario_a_answers.pdfIn PDF document text
- http://xawaren.pbworks.com/f/98037753541.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6c2cb9dc-35a7-40ec-a915-f8c8f05378e9/xewilegoragopakajabu.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_off0000eb0a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB0A | 5364 bytes |
SHA-256: 16e07b9993dcc1f3e1b3a6ab2129497b64d380b554436c14a4be702e2250718b |
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font_01_sfnt_off0000fd50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD50 | 10560 bytes |
SHA-256: 35f56c6411dbbd9e8f56bd3c77f07ddbec7086e02ed99cb43d236eb126fc96fc |
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