MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, with a significant number pointing to disposable domains and exhibiting characteristics of a link farm. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a large number of outbound links, likely for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, classifying it as a phishing or trojan PDF. The embedded URLs, such as 'vilenefex.ru' and 'olipaka.xyz', are likely part of the distribution chain.
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://vilenefex.ru/123?utm_term=baby+day+out+movie+mp4++coolmoviez PDF link annotation
- http://olipaka.xyz/fruits_splash_2019_resultsvefva.pdfIn PDF document text
- https://cdn.sqhk.co/pigevikuwi/jd6YdNB/coconut_ice_cream_recipe_cuisinart.pdfIn PDF document text
- http://tvoeobrazovanie.fun/36817137602o445j.pdfIn PDF document text
- https://cdn.sqhk.co/gebitasixa/g4jangh/dinejipafekomojumosofovuf.pdfIn PDF document text
- http://originalhallyu.com/naruto_ultimate_ninja_apk0n3x8.pdfIn PDF document text
- http://gnoogle.site/43699154736ev8xk.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/dadupawo/bartolome_de_las_casas_definition_apush.pdfIn PDF document text
- https://54d25d35-1219-4e5f-97c3-905e72ea606f.filesusr.com/ugd/6d59ab_779d36a5bee24a60bb26df808e7d7409.pdf?index=trueIn PDF document text
- https://1df32be7-5e6a-491e-80e4-5c558052ef26.filesusr.com/ugd/e02e08_3ce32cc93b93439e80aa8eb63d51aa4c.pdf?index=trueIn PDF document text
- https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_aae756ec143a4bcc8b10cdbe7faa25ad.pdf?index=trueIn PDF document text
- https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_5dfc1cba71bf4e169023f07f4176003d.pdf?index=trueIn PDF document text
- https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_77953b7a06ec4a6399acf157cde0540d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/dozore/lusakexivogogomosopijup.pdfIn PDF document text
- https://s3.amazonaws.com/sosupejuxofedo/noregitabibu.pdfIn PDF document text
- https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_3aa8b78fb93e41e4b821910e52f7df90.pdf?index=trueIn PDF document text
- https://da99f664-88c7-4a27-98aa-0bbcec2e8f57.filesusr.com/ugd/66f3f9_9a08b261e9dc4f1c8480fcf987d19dd8.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xetasif/mafonetofufediditix.pdfIn PDF document text
- https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_4012250203f2454a8861acb07e749208.pdf?index=trueIn PDF document text
- https://5a2ada08-5b6c-402a-b0df-3636415b461e.filesusr.com/ugd/434ae6_c3ba6fece0e7409d87f3eb84eb1ac0ec.pdf?index=trueIn PDF document text
- https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_2f3b7e613094406ea50bcc6da6f9839f.pdf?index=trueIn 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_off0000e694.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE694 | 5432 bytes |
SHA-256: 770d528def9b09f0606402c42c982f4e024c6214fcaea1ae83b01b470efea9a5 |
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font_01_sfnt_off0000f916.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF916 | 10956 bytes |
SHA-256: cec6ded6ff2e2381da730ad1eba1a7d0528610ee5b5ba99a56b189e880eb6019 |
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