MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or credential harvesting campaign. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics indicates a deliberate attempt to obscure malicious destinations through a large number of redirects.
Machine Learning
- Nyx PDF Classifier malicious score 0.9893
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 https://krisoc.ru/uplcv?utm_term=flatten+a+pdf+online PDF link annotation
- http://panziofabian.hu/fck_kepek/mojoki.pdfIn PDF document text
- http://naasschoolofmotoring.ie/fckeditor/userfiles/file/10462892771.pdfIn PDF document text
- http://showdoimovel.com/files/files/povule.pdfIn PDF document text
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136a3718e4a7---rokololonibadefexujoledom.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/af2fbd7697e30a54003f41a4353ae32c/daxanavenepefibiwig.pdfIn PDF document text
- https://sherwoodchamber.org/ckfinder/userfiles/files/68973120234.pdfIn PDF document text
- http://lacasedescaraibes.fr/file/ranefunedidesupop.pdfIn PDF document text
- http://xn--9d0b102a6wc3y4a.com/sa_upload/userfiles/file/20210927225232.pdfIn PDF document text
- http://axiomestates.com/userfiles/file/18976282277.pdfIn PDF document text
- http://thesnowmanicecream.com/ckfinder/userfiles/files/xogibupob.pdfIn PDF document text
- http://80tner.friend-match.com/upload/files/90482881779.pdfIn PDF document text
- https://autosaloncenter.com/uploads/files/8358661209.pdfIn PDF document text
- http://polipadel.com/userfiles/file/86359307692.pdfIn PDF document text
- http://candemdientu.com/Images_upload/files/1830639873.pdfIn PDF document text
- http://kccmaul.com/files/files/43404422397.pdfIn PDF document text
- http://dc-07b6a75bc4d0.breakthrough-physical-therapy.com/userfiles/files/14605713102.pdfIn PDF document text
- http://ventensis.lt/public/ckfinder/userfiles/files/fewowovelutofilufoxivu.pdfIn PDF document text
- http://veszpremkosar.hu/_user/file/38194779352.pdfIn PDF document text
- http://shengyaweb.com/uploadfile/file/2021091800362651.pdfIn PDF document text
- http://sangiorgioautoservizi.com/userfiles/files/sususaxisilane.pdfIn PDF document text
- http://hiredriver.com/uploads/assets/files/41908563007.pdfIn PDF document text
- http://satthachkhe.vn/image/file/kifinasiduni.pdfIn PDF document text
- https://rsun.pro/admin/ckfinder/userfiles/files/jevoti.pdfIn PDF document text
- http://de-ko-gmbh.com/ckfinder/userfiles/files/botepoxu.pdfIn PDF document text
- http://drumlockingclamp.com/FCK_Editor_Images/files/wifediwoka.pdfIn PDF document text
- https://kurashi-kyoiku.com/cms/dat/upimg/file/gomob.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://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_off0000b0ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB0AC | 15152 bytes |
SHA-256: 01da943ae692199264aabed15781c0bf6c91b7c8d8825dfa067747c012da3d81 |
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font_01_sfnt_off0000d6d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6D1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000eee8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEE8 | 10200 bytes |
SHA-256: be3784833e254754e9bcf0b858c133f2dc302db972aa76d820e79a19a3bd16d4 |
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