MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by multiple heuristics and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting it's part of a link farm designed to drive traffic or host malicious content. The primary URL observed is https://kuzutuzo.ru/strik?utm_term=como+ler+projeto+de+ferragens, which is likely a redirection point.
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://kuzutuzo.ru/strik?utm_term=como+ler+projeto+de+ferragens PDF link annotation
- https://static.s123-cdn-static.com/uploads/4379841/normal_5ff9fbe86db14.pdfIn PDF document text
- https://dezirivudamowi.weebly.com/uploads/1/3/1/8/131856369/dogavanivi.pdfIn PDF document text
- https://tulopudegiwidal.weebly.com/uploads/1/3/0/7/130739196/woloji.pdfIn PDF document text
- https://pukibasobudez.weebly.com/uploads/1/3/1/3/131379944/8025032.pdfIn PDF document text
- https://tobisimotar.weebly.com/uploads/1/3/5/3/135330661/6372165.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367911/normal_605c195b6924b.pdfIn PDF document text
- https://poximixej.weebly.com/uploads/1/3/0/7/130776069/a1c116764db0d.pdfIn PDF document text
- https://rapafasevujeto.weebly.com/uploads/1/3/0/7/130775542/b5db926.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/kovilowab/ketiwegisabagodem.pdfIn PDF document text
- https://s3.amazonaws.com/pusolefosex/kuratakowafalu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/17985295-3b99-4e6f-90be-a12e0fe20379/68183456384.pdfIn PDF document text
- https://s3.amazonaws.com/pekatikisuruki/being_independent_worksheets.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0e55a9a9-2059-4ea7-93e8-f0eaee80609a/mugalex.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eec90d23-6455-44c8-a0e3-9ae66fb6ac05/wumidixasawudetexer.pdfIn PDF document text
- https://s3.amazonaws.com/wanasuvedigo/86433916261.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/16722503-daa1-459a-b3ea-1563d0d519a2/calendario_de_pagos_sep_2020_cdmx.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4bf1f215-e81e-4548-8a41-a56399a80903/50978000255.pdfIn PDF document text
- https://s3.amazonaws.com/zurovajij/aviary_apk_for_android.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/78ba642e-936f-4436-a61d-ab2be2992c57/88016437440.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c9023819-f934-4a41-9e25-013c3b95c93e/77775627453.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/52039dc4-c654-423d-b7f6-b8cddf21a913/36494270855.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_off00010a74.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A74 | 5340 bytes |
SHA-256: 96e86a4d9bb4d8475620d648e24f8b4aae3d180352181593533f753c524d8273 |
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font_01_sfnt_off00011c8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C8B | 12616 bytes |
SHA-256: 7b7097053628183229e4cda62f578035158d1748fdf8585d5ece0e995cd28d91 |
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