MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous external URIs, including one pointing to 'synerhu.ru' with a 'usb audio player pro free download' UTM term, suggesting a lure. The PDF also functions as a link farm on disposable hosting, further indicating malicious intent. While no scripts were explicitly extracted, the presence of external links and the phishing detection strongly suggest the PDF is intended to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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://synerhu.ru/uplcv?utm_term=usb+audio+player+pro+free+download PDF link annotation
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134155366e7b---4854376362.pdfIn PDF document text
- http://doradcyprawni.com/images/pliki/2791088756.pdfIn PDF document text
- http://baihsad.com/userfiles/files/20210907_040431.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16133123835ad2---pewosijowagusobupigafage.pdfIn PDF document text
- https://mp2020.csysadmin.com/ckfinder/userfiles/files/68621790101.pdfIn PDF document text
- https://mattress-leader.com/media/14656074621.pdfIn PDF document text
- http://melabo.com/upload/files/somulerakofevegovale.pdfIn PDF document text
- http://sofupingame.com/calisma2/files/uploads/vetafatefawukiwidepesufo.pdfIn PDF document text
- http://vinhthuan.vn/upload/files/nunikija.pdfIn PDF document text
- https://dom4m.com/userfiles/files/mupuxut.pdfIn PDF document text
- https://conexusinternational.com/ckfinder/userfiles/file/68548985600.pdfIn PDF document text
- https://gangnampools.com/contents/files/77748866914.pdfIn PDF document text
- https://inprovitchile.com/ckfinder/userfiles/files/zojoje.pdfIn PDF document text
- http://www.la-rocca.pl/app/webroot/files/files/64348667105.pdfIn PDF document text
- http://stonepigments.com/userfiles/file/mimol.pdfIn PDF document text
- https://0924055971.com/uploads/files/202109110147406649.pdfIn PDF document text
- http://nikkenj.com/userfiles/file/safenegibawuvi.pdfIn PDF document text
- http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/42484837621.pdfIn PDF document text
- http://globalroomplus.com/bot/ckfinder/uf/files/5590874746.pdfIn PDF document text
- https://autoandtruckrepair.net/nbloom/fckuploads/file/26087417736.pdfIn PDF document text
- https://fitness-sport.it/userfiles/file/24917256090.pdfIn PDF document text
- https://www.aicsmindia.org/ckfinder/userfiles/files/ludotukukujitowirup.pdfIn PDF document text
- https://at-studio.tw/app/webroot/userfiles/files/20210906_200504.pdfIn PDF document text
- http://metamorfoza-krosno.pl/userfiles/file/wologaxovapejoxul.pdfIn PDF document text
- http://zensushidanapoint.com/uploads/files/57842323425.pdfIn PDF document text
- http://dienlanhlongan.com/upload/files/xetakis.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_off0000d7a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7A3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000efb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB5 | 17396 bytes |
SHA-256: fc9f7adf55bc3304f1f4b4c54f9c408cdb5ac24acca89b611ae4d2d7c395cea6 |
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font_02_sfnt_off00011c59.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C59 | 10840 bytes |
SHA-256: 04d169f4a7d4057fefe23f5244bfd5da96b51b1df69ed04cb6c49cfbb8003825 |
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