MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'SE_BROWSER_INSTALL_LURE' strongly suggests the document is designed to trick users into installing malicious software by posing as a necessary browser update or extension. The numerous embedded URLs, including 'https://smidgel.ru/uplcv?utm_term=piratebay+rocks+proxy', likely serve as download or redirection points for the malicious payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://smidgel.ru/uplcv?utm_term=piratebay+rocks+proxy PDF link annotation
- http://ndc-group.ru/uploads/files/lisalopuwakizedowiwajexuj.pdfIn PDF document text
- http://southerncross-ex.com/images/blog/file/rukifofopaxetutu.pdfIn PDF document text
- http://wanyuantemple.tw/userfiles/file/perudujeduzu.pdfIn PDF document text
- http://sartor.ru/upload/files/devodek.pdfIn PDF document text
- http://learnazia.com/fck/imagesfile/13534937056.pdfIn PDF document text
- http://drprdesaihospital.com/uploads/rofikujedorixuka.pdfIn PDF document text
- https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/xoxux.pdfIn PDF document text
- https://szallas-karpatalja.hu/upload/34768215165.pdfIn PDF document text
- http://cungcapbaoduongcuanhatban.com/upload/files/10984682478.pdfIn PDF document text
- http://risme.vn/files/564066706.pdfIn PDF document text
- http://hengtaixin.com/HangShun/ckfinder/userfiles/files/suwolirebafogexuvisuk.pdfIn PDF document text
- http://ags-sib.ru/ckfinder/userfiles/files/85501003626.pdfIn PDF document text
- http://pro-group.ru/userfiles/file/furozexutezuxikesapibim.pdfIn PDF document text
- https://speak82.com/_UploadFile/Images/file/vorumiwurude.pdfIn PDF document text
- https://quimicasorocolor.com.ve/ckfinder/userfiles/files/liwowipijexuredev.pdfIn PDF document text
- http://madmojo.com/fckupload/file/xonopifiwutimopixuduvajek.pdfIn PDF document text
- https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/89357803876.pdfIn PDF document text
- http://greenmodels.ru/uploads/files/lidesexegupe.pdfIn PDF document text
- http://tea-ra.com/user_data/upload/save_image/files/suvogakapi.pdfIn PDF document text
- http://www.coverseg.com/uploads/ckfinder/files/34748050217.pdfIn PDF document text
- https://www.koreayokogawa.com/ckfinder/userfiles/files/54686548267.pdfIn PDF document text
- https://durgabas.coop.np/ckfinder/userfiles/files/47575289799.pdfIn PDF document text
- http://beccaro.it/userfiles/files/tozitapenotitogolapip.pdfIn PDF document text
- http://cheliabinsk.realxenon.ru/uploads/files/93611703507.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_off0000daba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDABA | 17256 bytes |
SHA-256: d183135ef41ed7f949885346ddd1f920470dc3ebc7c37223e83d5e509583ca73 |
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font_01_sfnt_off000107d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107D5 | 10668 bytes |
SHA-256: 4fabe4e832924b8c02d01fbb3d20f240f6dfb5b9dd745d9b36a58abadfeb1cee |
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font_02_sfnt_off0001204f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1204F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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