MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it is part of a link farm designed to redirect users to potentially harmful content. The document body, though partially corrupted, contains metadata related to 'wkhtmltopdf' and a title about differential equations, which is likely a lure to disguise the malicious nature of the embedded links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://chcial.ru/pbw?utm_term=ecuaciones+diferenciales+de+primer+orden+con+coeficientes+constantes PDF link annotation
- https://satewode.weebly.com/uploads/1/3/1/4/131407014/9053655.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381541/normal_6009dab5b8f13.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447280/normal_5fd6cf3a6cb9f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4480735/normal_5fefe4301e212.pdfIn PDF document text
- https://ravaratu.weebly.com/uploads/1/3/5/4/135401011/kidajilususokomuvu.pdfIn PDF document text
- https://vinebikeja.weebly.com/uploads/1/3/4/7/134712271/fovap-dasogomote.pdfIn PDF document text
- https://lugarulanug.weebly.com/uploads/1/3/5/3/135383187/dulonituvunazim.pdfIn PDF document text
- https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/lukubapikixuzidum.pdfIn PDF document text
- https://pubefuxotup.weebly.com/uploads/1/3/4/2/134234554/wokepe.pdfIn PDF document text
- https://japarikadag.weebly.com/uploads/1/3/4/1/134108792/6834241.pdfIn PDF document text
- https://rivibesosad.weebly.com/uploads/1/3/4/5/134529272/zoxuluvoladifosiguje.pdfIn PDF document text
- https://pagomowe.weebly.com/uploads/1/3/4/6/134608852/3271751.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4425760/normal_5fcd651a7d3cd.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://ruwomodanom.pbworks.com/f/how_to_overhand_throw.pdfIn PDF document text
- http://gibabug.pbworks.com/f/list_of_prime_numbers_1-100.pdfIn PDF document text
- http://jetipufagi.pbworks.com/w/file/fetch/144572484/waduba.pdfIn PDF document text
- http://mifimoruzuwo.pbworks.com/w/file/fetch/144615489/clases_de_atomos_de_carbono_primario_secundario_terciario_y_cuaternario.pdfIn PDF document text
- http://tosuvop.pbworks.com/f/inventarios_perpetuos_ejercicios_faciles.pdfIn PDF document text
- http://rozeluf.pbworks.com/w/file/fetch/144555489/gta_vice_city_kurtlar_vadisi_indir_tamindir.pdfIn PDF document text
- http://sufizilofab.pbworks.com/w/file/fetch/144503490/how_to_fix_my_verizon_remote_control.pdfIn PDF document text
- http://mibegenav.pbworks.com/w/file/fetch/144446619/lego_serious_play_innovation_workshop.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f292.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF292 | 5140 bytes |
SHA-256: 2b151c164a9c6acd4974c82248080e445f1c2d23201f69e0006edadb7241fb5e |
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font_01_sfnt_off000103f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103F0 | 11128 bytes |
SHA-256: b5ece24c8298c3669bf63c24a369dd64bbb86c0a8a2c5cff3ddaa06e62973700 |
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font_02_sfnt_off000129bd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129BD | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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