MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous external URIs, with one pointing to a raw IP address, and is described as a link farm on disposable hosting, suggesting a phishing lure. The presence of embedded URLs and the heuristic 'SE_DOWNLOAD_BUTTON' further support a social engineering attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://wastran.ru/uplcv?utm_term=elements+of+modern+algebra+solutions+pdf PDF link annotation
- https://ewdel.cz/ckfinder/userfiles/files/xorarepoxasaxamilafewi.pdfIn PDF document text
- http://maychamsocda.vn/images/userfiles/file/zetawakovux.pdfIn PDF document text
- http://studioambienteterritorio.it/userfiles/files/ruzinepiletudejokaxop.pdfIn PDF document text
- https://hogozaty.com/ckfinder/userfiles/files/89768603143.pdfIn PDF document text
- http://kietminhrivet.com/upload/files/41166770221.pdfIn PDF document text
- http://lammermoor.net/imagenes/file/69500980069.pdfIn PDF document text
- https://bimore.vn/webroot/img/files/ginefaxerufesumeloseb.pdfIn PDF document text
- https://snoman.mb.ca/ckfinder/userfiles/files/xabimirumujigujumexiwap.pdfIn PDF document text
- http://ranfeng.com/userfiles/file/2021-9///2021914129431212.pdfIn PDF document text
- https://pacantioquia.org/aym_image/files/41503675458.pdfIn PDF document text
- http://tonyprins.nl/images/uploads/file/rosixuduzaku.pdfIn PDF document text
- http://styrexon.cz/userfiles/file/68399992411.pdfIn PDF document text
- http://thewhitmerlawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dadimage.pdfIn PDF document text
- http://royalgroup.at/tmp/11428732455.pdfIn PDF document text
- http://effektfilm.de/files/file/9112012650.pdfIn PDF document text
- https://organicearthfiji.com/documents/file/43241732461.pdfIn PDF document text
- https://cargotavio.ru/files/file/40466274981.pdfIn PDF document text
- http://wpscrm.in/uploaded_files/userfiles/files/34851405615.pdfIn PDF document text
- http://morpheus-architects.com/file_media/file_image/file/77787843540.pdfIn PDF document text
- http://185.33.116.145/~acus01/upload/files/86648494429.pdfPDF link annotation
- http://brmhn.com/userfiles/file/20210919103418_4ls3fj.pdfIn PDF document text
- https://www.aukuras.org/ckfinder/userfiles/files/liziramibaxigefesozif.pdfIn PDF document text
- https://merohamro.com/ckfinder/userfiles/files/553006954.pdfIn PDF document text
- https://prestinireedcorp.com/userfiles/files/lugonuzimewufenanuk.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_off0000c26f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC26F | 11064 bytes |
SHA-256: 19a7ba94b2a1bf6c1cd8692f41960c32004312ef24ab1f46bb7b6ee22bc6e435 |
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font_01_sfnt_off0000dbb6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBB6 | 16800 bytes |
SHA-256: 741bcb6e91fa63bf48a13d6d87d90d8ef3c5f9a2039253fb31baa31c83259811 |
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font_02_sfnt_off000106f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106F5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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