MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a large number of external links, many of which are embedded within the document body and appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to manipulate search engine results or to distribute malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.
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://leonvi.ru/strik?utm_term=vtech+cs6429-2+reviews PDF link annotation
- https://static.s123-cdn-static.com/uploads/4473030/normal_5ff30ae22ad5b.pdfIn PDF document text
- https://xoregofejaba.weebly.com/uploads/1/3/4/6/134651656/22a93ea0.pdfIn PDF document text
- https://nijolajosota.weebly.com/uploads/1/3/4/6/134678148/5205124.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447640/normal_5ff7e238e2c59.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4447270/normal_5fc863cfadfe7.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://2571d5ef-7130-409a-b87d-c3fd18a83f30.filesusr.com/ugd/71fc55_5ea92684b47842ffac03ae3cd46f34f6.pdf?index=trueIn PDF document text
- https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_b02b6ad9e9fc41148d9a4e0148b5ba63.pdf?index=trueIn PDF document text
- http://lojodufiburu.rf.gd/where_i_can_watch_twilight_for_free.pdfIn PDF document text
- https://9e0ebcba-7e04-41ac-afc6-cfc574163c15.filesusr.com/ugd/6725b5_2c7498b5309140f0ac5b75ebdb82b165.pdf?index=trueIn PDF document text
- https://b32521b7-32ca-447e-9967-d27d0dce683d.filesusr.com/ugd/800b88_d8a37595dd9b473aa6bca10881e983c2.pdf?index=trueIn PDF document text
- https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_be0b0d2634cf47a993347179f7da05b2.pdf?index=trueIn PDF document text
- https://ebcfae26-b4e4-4f1a-a5b2-c5bdbddc1bdf.filesusr.com/ugd/259f90_ea59263ceffc476a8d2acf741772c779.pdf?index=trueIn PDF document text
- https://40ba1f7a-6e91-49bb-bbb8-dfbb40a2bc60.filesusr.com/ugd/22bf55_d5d3be6a52c0457182fa454d73448b06.pdf?index=trueIn PDF document text
- https://6552665f-f3ce-4070-9f47-7b493df4570a.filesusr.com/ugd/3d88c7_6065074270f64f1f8726a2ebd33ad9b9.pdf?index=trueIn PDF document text
- http://nareboveridur.epizy.com/39478103037.pdfIn PDF document text
- https://5b3fc17b-a4fb-4144-9a53-ff617e35bc6a.filesusr.com/ugd/696117_272b76b0b71c4e1197f409310e9c21f7.pdf?index=trueIn PDF document text
- https://9c3086b9-336b-4a4d-b39c-975a2563a2e0.filesusr.com/ugd/f4f792_63372abd7bfc4fc5a19887af47819144.pdf?index=trueIn PDF document text
- https://d80868e2-5d34-4dda-9345-0396294a35aa.filesusr.com/ugd/f9fac6_8789d6269a5846888be9ef40a1cd3cd6.pdf?index=trueIn PDF document text
- https://520c840f-7702-4e28-87de-278da5b03b63.filesusr.com/ugd/e633b3_3d9d938a9330427686fb844a0d774c4c.pdf?index=trueIn PDF document text
- https://182222a4-a7a4-434f-839c-7103b506edb5.filesusr.com/ugd/224a67_50c11980bc2d40fb8464339ca0eb7a13.pdf?index=trueIn PDF document text
- http://kanisal.epizy.com/c_user_defined_literals_template.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_off0000ee3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE3F | 5324 bytes |
SHA-256: 466ee95c4b1f937f3fcc2acf3f70b615a565ef109dfe7a2ac0f3b51d8b41b17e |
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font_01_sfnt_off0001007f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1007F | 13428 bytes |
SHA-256: b6d105e18d560116af805f749c621f51fae908d04d016d5bb4df836d36f096a5 |
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