MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high number of links on disposable hosting, suggesting a link farm designed to obscure malicious intent. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9911
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 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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://duet-czluchow.pl/userfiles/file/77355110513.pdf In PDF document text
- https://rallstarawards.us/nbloom/fckuploads/file/zuwowo.pdfIn PDF document text
- http://sswjeans.com/files/52112732128.pdfIn PDF document text
- http://kraemer-duennebacke.de/files/file/guvofowokebi.pdfIn PDF document text
- https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/68293739070.pdfIn PDF document text
- https://ambient-interier.cz/files/files/91804913999.pdfIn PDF document text
- http://noticiascgnews.com.br/ckfinder/userfiles/files/14500957148.pdfIn PDF document text
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382a794ab6d---julugewofusabefub.pdfIn PDF document text
- http://pumarecovery.com/userfiles/files/13836026499.pdfIn PDF document text
- http://tt-ural.su/admin/ckfinder/userfiles/files/79195433182.pdfIn PDF document text
- https://gagiongvitgiong.com/ckfinder/userfiles/files/bomezewasenugegu.pdfIn PDF document text
- http://kvarkeno56.ru/userfiles/file/6069289820.pdfIn PDF document text
- http://backkwang.com/userData/board/file/46999538342.pdfIn PDF document text
- http://southerncross-ex.com/images/blog/file/79383028921.pdfIn PDF document text
- https://drproperty.in/userfiles/file/79094450241.pdfIn PDF document text
- http://felixefontesadvogados.com.br/ckfinder/userfiles/files/wafesigujukovujefowowi.pdfIn PDF document text
- http://corising.info/sa_upload/userfiles/file/20210906150312.pdfIn PDF document text
- https://webmakler.org/userfiles/file/boxazifudezonixapuvu.pdfIn PDF document text
- http://aurastaffing.es/upload/file/75825847775.pdfIn PDF document text
- http://mundialimportweb.com/userfiles/file/33155701450.pdfIn PDF document text
- http://banglenhospital.com/UserFiles/File/21923876335.pdfIn PDF document text
- http://autoscuolavalerio.it/userfiles/files/ririgowowaweluwabumed.pdfIn PDF document text
- http://elfuklid.cz/foto/Image/file/90019898369.pdfIn PDF document text
- https://alohasafaris.com/files/kebazevadewujozos.pdfIn PDF document text
- https://thic.net/plugin/ce1/ckfinder/userfiles/files/74448505659.pdfIn PDF document text
- http://mfahk.com/upload/files/32669529538.pdfIn PDF document text
- http://topenglish.sk/app/webroot/gallery/files/baniro.pdfIn PDF document text
- http://thienminhgroup.com/uploads/userfiles/file/94846607243.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=nba+2k15+mobile+downloadPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e056.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE056 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f86d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF86D | 10644 bytes |
SHA-256: 00deb3166ff6abe65d7af3b6d5249e25feb5f580c800620c6322435191beabe7 |
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font_02_sfnt_off000110ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110EF | 17860 bytes |
SHA-256: 108632e66516008019291ce6834788add366100aa298386d38b1c4f7e068192d |
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