MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. The PDF contains numerous embedded URLs, with the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicating a high volume of links to disposable hosting. One of these URLs, 'https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/86480859684.pdf', is identified as a potential entry point for further malicious activity. The document body is unreadable, but the overall structure and heuristic firings strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://nsstore.mx/ckeditor/ckfinder/archivossubidos/files/86480859684.pdf In PDF document text
- https://robertbah.si/files/file/nokafolefotebuga.pdfIn PDF document text
- http://wxmx.cn/upload/ckimg/files/202109081952019322.pdfIn PDF document text
- https://dukeofmarshall.com/ckfinder/userfiles/files/46604181788.pdfIn PDF document text
- https://tsafar.ir/basefile/tsafarir/files/47398462056.pdfIn PDF document text
- https://e-motorcycle.tw/upload/emotorcycle/files/45733978570.pdfIn PDF document text
- https://hamasataccessories.com/userfiles/files/42650007632.pdfIn PDF document text
- https://myarchitect.es/ckfinder/userfiles/files/xaxemikemudag.pdfIn PDF document text
- http://africalegal.nl/userfiles/file/31386685338.pdfIn PDF document text
- http://burchiellati.com/file_fck/file/fugiladivafakopexasuxu.pdfIn PDF document text
- http://brandiassociati.it/userfiles/file/47756706853.pdfIn PDF document text
- http://nhactheducthammy.com/upload/files/kezuju.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131b8b312ed6---15373334537.pdfIn PDF document text
- http://azinsaghf.com/cache/fck_files/file/62334208684.pdfIn PDF document text
- https://ienter.bg/files/kuwomufugajofelituv.pdfIn PDF document text
- http://poaglasses.com/uploads/files/202109091120554651.pdfIn PDF document text
- http://dataction.org/demo/dataction/media/belunezixaxovunogabowasid.pdfIn PDF document text
- http://pamatudarbai.lt/ckfinder/userfiles/files/33499961124.pdfIn PDF document text
- http://deleeuwputten.nl/site/data/ws/files/dofap.pdfIn PDF document text
- http://air-ned.com/uploads/files/17255624089.pdfIn PDF document text
- http://crmrealty360degree.in/ci/userfiles/files/talimumin.pdfIn PDF document text
- http://liubeauty.com/luutru/files/nejomawafulozetumafor.pdfIn PDF document text
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613d2e19eb983---sutawudadijupudise.pdfIn PDF document text
- http://cafehinglung.com/uploads/files/tasitugolujirufazubosoje.pdfIn PDF document text
- http://paradisetourkorea.com/FileData/ckfinder/files/20210905_6A85AC12DDD446FA.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=dj+studio+5+skin+bundle+apkPDF 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_off0000b254.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB254 | 10884 bytes |
SHA-256: 5ea53ed8a59ee460d9d61a11daec8da3151604aaaef7d16210228b0df208ce52 |
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font_01_sfnt_off0000cb69.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB69 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e37b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE37B | 17004 bytes |
SHA-256: 2fd9a0900e5be9c57902811d99d12843bb292edfadb7c9d33a5b645660ca21df |
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