MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious, with heuristics indicating it functions as a link farm. The document body is heavily obfuscated, but the presence of numerous embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the intent is to redirect users to a network of potentially malicious sites. The primary IOCs are the URLs pointing to these linked PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 5
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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 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://groupkaishan.com/d/files/88040836488.pdf In PDF document text
- https://vntdc.com/upload/fck/file/13080498747.pdfIn PDF document text
- https://danfort.lv/userfiles/file/43379569993.pdfIn PDF document text
- https://ajwatravel.com/wheelmarine/userfiles/file/sanafabasefibonefenujetor.pdfIn PDF document text
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/b84a885e4945da30796ecfb94a5fa37f/vibadug.pdfIn PDF document text
- http://myflora888.com/ck_files/files/duvuzodimo.pdfIn PDF document text
- http://cyuansheng.com/userfiles/file/3831452755.pdfIn PDF document text
- http://www.tiande-global.com/ckfinder/userfiles/files/nopoloduwipupasokuzokik.pdfIn PDF document text
- http://konferencii.org/web/uploads/assets/file/84925080926.pdfIn PDF document text
- https://inprovit.com/ckfinder/userfiles/files/9203667602.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614590e0c983d---60870853443.pdfIn PDF document text
- https://dispecom.com/cms_dispecom/sgi_userfiles/userfiles/files/zodogeditetor.pdfIn PDF document text
- http://popnmusic.fr/userfiles/file/63499471293.pdfIn PDF document text
- https://wsbe17hongkong.hk/_bin/ckfinder/userfiles/files/98623681418.pdfIn PDF document text
- https://veterinarycarefoundation.org/userfiles/file/bobefipawozosedivetuzit.pdfIn PDF document text
- http://brunagabriele.it/userfiles/files/rivuvawumezilili.pdfIn PDF document text
- https://markapin.com/calisma2/files/uploads/lezunozogonekesezevekol.pdfIn PDF document text
- http://sriraghavendratemple.com/ckfinder/userfiles/files/12300208138.pdfIn PDF document text
- http://www.cavice.fi/tiedostot/files/35294094362.pdfIn PDF document text
- https://luathoanghuy.com/uploads/files/widoxowisaxe.pdfIn PDF document text
- http://koryosushi.com/uploads/files/jifef.pdfIn PDF document text
- http://jamones-luna.shopcloud.es/ckfinder/userfiles/files/93210242627.pdfIn PDF document text
- http://daoltrading.com/userData/board/file/poxumem.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=explain+the+different+types+of+pollution+under+environment+protection+actPDF 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_off0000cbcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBCC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e3e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3E3 | 11252 bytes |
SHA-256: 5e340e4f6ac3264d66251cf7cae6e7bef1bfb3872afbbfad382ae4fa11860b93 |
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font_02_sfnt_off0000fe20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE20 | 17156 bytes |
SHA-256: ad1a3390eb96a4e507b5a3466ac3f51e9b459b3d69f6af70bb610ddcae64076a |
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