MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a large number of links pointing to external sites, with one URL being https://bologen.ru/strik?utm_term=printable+calendar+june+2021+to+june+2022. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://bologen.ru/strik?utm_term=printable+calendar+june+2021+to+june+2022 PDF link annotation
- https://guxodobozit.weebly.com/uploads/1/3/4/3/134333536/peliwoliwezozas.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426957/normal_603d02c2de701.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373788/normal_603e9d9ed88c8.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4405925/normal_60afe803a5e15.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4414159/normal_5fcc376f595ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4403679/normal_600fc7613f674.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445877/normal_603095d9738dc.pdfIn PDF document text
- https://xovuxajewilim.weebly.com/uploads/1/3/0/7/130775567/96c982447958.pdfIn PDF document text
- https://silagonamep.weebly.com/uploads/1/3/1/4/131452845/1186079.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465007/normal_5fe9d9a0350c6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446260/normal_605be764a9b2e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377379/normal_604cc2c5e4134.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382405/normal_6053e13f6e049.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459935/normal_5fd3ce025f6fe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459028/normal_5fe76a3561168.pdfIn PDF document text
- https://gekanabedo.weebly.com/uploads/1/3/4/3/134318260/gijuzijamuva.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4453142/normal_5fcedbab05f8c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490516/normal_600f9ef3c7676.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4411944/normal_60aff5dc7772b.pdfIn PDF document text
- https://zijuwufe.weebly.com/uploads/1/3/7/5/137518410/1849411.pdfIn PDF document text
- https://fozikubovofow.weebly.com/uploads/1/3/4/8/134897471/1433547.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/4c53bee3-e47a-4ba2-97bc-77ed6a0c5387/40938239280.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/425b7cc1-763b-4208-a7c4-b73a6b359d81/lafujexuzubipifozidogaw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9de6e724-1f13-473b-ba29-3d69c9d54444/53293674112.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5767f7e4-5c48-4d52-947c-2b78273639be/homemade_bpcr_shooting_sticks.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_off0000f8dd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8DD | 5300 bytes |
SHA-256: 74a7b1137b22068d9ecfe88bf767325536613f48be9b24c36563925c3d967b8f |
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font_01_sfnt_off00010af6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AF6 | 10596 bytes |
SHA-256: 045a761fe0f88647eee03e60d3d8dc6cd7e44e70a241f87e0ba469f68e893c19 |
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