MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It functions as a link farm, containing numerous external URIs, many of which point to disposable hosting services. The primary malicious URL identified is https://nipisod.ru/strik?utm_term=movimiento+rectilineo+uniformemente+acelerado+ejemplos+en+la+vida+cotidiana, which is likely used to redirect users to phishing or malware distribution sites. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://nipisod.ru/strik?utm_term=movimiento+rectilineo+uniformemente+acelerado+ejemplos+en+la+vida+cotidiana PDF link annotation
- https://static.s123-cdn-static.com/uploads/4386594/normal_5fc768df9b43c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370286/normal_5fcdddd866086.pdfIn PDF document text
- https://mozufutedubido.weebly.com/uploads/1/3/4/5/134503110/7f1b312ef9f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369793/normal_6055a580116fb.pdfIn PDF document text
- https://dalowosa.weebly.com/uploads/1/3/4/3/134383453/7825090.pdfIn PDF document text
- https://getomipo.weebly.com/uploads/1/3/4/4/134403721/79a0ca396aad3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370780/normal_60558493f0c86.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494866/normal_5fda41e5e56f8.pdfIn PDF document text
- https://siketaxugulus.weebly.com/uploads/1/3/5/3/135309361/kusukolaka.pdfIn PDF document text
- https://xaminipa.weebly.com/uploads/1/3/1/0/131071220/82f3f.pdfIn PDF document text
- https://fipakitifenilab.weebly.com/uploads/1/3/4/0/134042330/4348139.pdfIn PDF document text
- https://joxobupapi.weebly.com/uploads/1/3/1/4/131454586/bijibo-dekovagetus.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375352/normal_5fe38a3ae8704.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387920/normal_605246d33756f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4459060/normal_6015ad84ae895.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4491686/normal_5fee137248279.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489838/normal_5fd97a9ca8b5f.pdfIn PDF document text
- https://kizuwapeputatu.weebly.com/uploads/1/3/4/3/134375201/nenorurozivit-semetu-xujefofu-kereli.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4479678/normal_60476df82ace3.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/5f6dbd5e-30e4-4355-a50a-99331c4d4af0/the_last_song_full_movie_123movies.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/71e3809f-7bd0-43cb-9239-45578783f178/givenidojapigovesile.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/363b9fa7-47a9-41c1-b1c6-1532c17fd05f/what_is_demonstration_in_teaching.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_off0000d1d8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1D8 | 5440 bytes |
SHA-256: 76eef71f46b0cc94dace6b63f35732d2831c0d14cb7b5165b0c10b297f26c34d |
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font_01_sfnt_off0000e45d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE45D | 10308 bytes |
SHA-256: 8ab69b2d6558f1d4fce9564ac3cf61877700a4cf03a627d9e26fb04cb65b2b9a |
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