MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to link farms hosted on disposable domains, suggesting an attempt to obscure the final malicious destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a strategy of using many distinct hosts to distribute links, a common tactic for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 5
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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 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 http://russian-ice-spb.ru/sites/default/files/webform/files/40307308503.pdf In PDF document text
- https://aboss.by/sites/default/files/webform/pibodanagulevegomenet.pdfIn PDF document text
- https://www.natsihwa.org.au/sites/default/files/webform/setafemamuf.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/28911573484.pdfIn PDF document text
- http://www.sumnercountyhospital.org/sites/default/files/webform/vetasitumuwogemukuruv.pdfIn PDF document text
- https://www.mothercare.ro/sites/default/files/webform/resumes/sojivezogi.pdfIn PDF document text
- http://klm3fg.grhosting.cz/sites/default/files/webform/files/6948618973.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/22435641867.pdfIn PDF document text
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/tojawi.pdfIn PDF document text
- http://klm3fg.grhosting.cz/sites/default/files/webform/files/5308316073.pdfIn PDF document text
- https://ambrose.edu/sites/default/files/webform/natogaj.pdfIn PDF document text
- http://www.guninetwork.org/system/files/webform/heirri_proposals/74543186253.pdfIn PDF document text
- http://portal-mysigma.com/system/files/student-proof/41429692510.pdfIn PDF document text
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/99469138220.pdfIn PDF document text
- https://www.enwidth.com/sites/default/files/webform/resumes/79062027218.pdfIn PDF document text
- https://www.mothercare.ro/sites/default/files/webform/resumes/xigidaz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=partituras+de+canciones+cristianas+para+piano+gratisPDF link annotation
- https://gradfutures.princeton.edu/system/files/webform/ninavixokamorul.pdfIn PDF document text
- https://ec.europa.eu/eip/agriculture/sites/default/files/webform/5272012193.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_off00010a46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A46 | 3312 bytes |
SHA-256: 082c89522e4251f0a814862fddf633b1dac669eb780a02580130c1f52bfffe84 |
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font_01_sfnt_off00011627.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11627 | 5208 bytes |
SHA-256: 36571e0e1bfa83077e3eb46a46b65ea5404f7f0bd24523dd07d5b119a6108aa9 |
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font_02_sfnt_off000127ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127ED | 13112 bytes |
SHA-256: 3561dc1723e517e485651ce8c732c452e370d071759ee8638055f69535e8a7f3 |
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