MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Vocab level e unit 3 answers', likely a lure to encourage clicks on the embedded URLs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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 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://krisoc.ru/pbw?utm_term=vocab+level+e+unit+3+answers PDF link annotation
- https://static.s123-cdn-static-d.com/uploads/4450248/normal_60b004aae6dbc.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391621/normal_604154c95cb9b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486037/normal_606e5bd9158ec.pdfIn PDF document text
- https://mebenemezozu.weebly.com/uploads/1/3/4/6/134689881/7993554.pdfIn PDF document text
- https://kiwemedorupa.weebly.com/uploads/1/3/4/4/134446537/zozobij-majagar.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408865/normal_5fcf9c7245c86.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465694/normal_6044f3dd6a42a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4379611/normal_5fd05532d59c4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4444092/normal_601f268697739.pdfIn PDF document text
- https://luvikexixof.weebly.com/uploads/1/3/4/4/134481561/relupedakemager.pdfIn PDF document text
- https://jinuvavuvebox.weebly.com/uploads/1/3/4/6/134612635/3527aef.pdfIn PDF document text
- https://sogegagep.weebly.com/uploads/1/3/4/6/134687839/3482071.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405206/normal_60458a63d1a22.pdfIn PDF document text
- https://berajuvexoru.weebly.com/uploads/1/3/1/8/131860787/47745.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402507/normal_60c2230a5afc3.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403141/normal_5ff543cc28ee3.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/2f4e6941-b46e-4324-b2de-74969badc3f6/71811829593.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e563517c-fce2-408f-a77d-8ec607e3cd7b/pogipozabavinopagol.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92dbc5de-bc59-4d03-af77-d29935b8c30f/oops_concepts_in_java_with_examples_for_beginners_ppt.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0ec9037a-2905-418d-97a8-a3b5d217eb05/flo_pro_6.4_egr_delete_instructions.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f40e018-7e98-4b00-aa46-6860679fb9c9/kitchenaid_superba_double_oven_cleaning_instructions.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_off0000d8a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8A3 | 5212 bytes |
SHA-256: 70911d13f4573b361a062cacedb2bbbdb0a234cc342cf5a0b8739f7e67468b00 |
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font_01_sfnt_off0000ea86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA86 | 13088 bytes |
SHA-256: dcd9287076cf50efb30821b32e787ec4b3dc75666bb13a49eee6e13e9f5ada3b |
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