MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to PDF files on potentially disposable domains, indicating a link farm designed to distribute malicious content or phish users. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic further supports this, noting a high number of distinct hosts with few links per host.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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 http://romangruszecki.com/uploaded/file/xuroxeximoviva.pdf In PDF document text
- http://www.letnifestiwal.pl/ckfinder/userfiles/files/vulekanazuzekiwopif.pdfIn PDF document text
- https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/lozib.pdfIn PDF document text
- http://vrajacreation.com/uploaded_files/userfiles/files/voxojisewegezo.pdfIn PDF document text
- http://vikingpaint.com/user_file/file/92191951824.pdfIn PDF document text
- http://timnhanhonline.vn/upload/files/65049677739.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161423b1283de4---ridodavor.pdfIn PDF document text
- http://lionsmarsala.it/userfiles/files/29129806713.pdfIn PDF document text
- https://deitratech.com/userfiles/file/netejofenifeb.pdfIn PDF document text
- https://lasanisports.com/files/kuwedoxob.pdfIn PDF document text
- http://villaelen.it/userfiles/files/zupesoporufabo.pdfIn PDF document text
- http://originalcheck.it/public/img_admin/file///99221485311.pdfIn PDF document text
- http://kavernoklub.com/campannas/file/32054885357.pdfIn PDF document text
- https://truongthanhco.vn/webroot/img/files/90069886223.pdfIn PDF document text
- http://kaiyudachem.com/filespath/files/20210906101539.pdfIn PDF document text
- http://freewest.at/12689583908.pdfIn PDF document text
- https://srinivasagroup.com/ci/userfiles/files/vijazegibozegenamazepel.pdfIn PDF document text
- http://panyuchen.com/ckfinder/userfiles/site_eachfun_com/files/4561095616.pdfIn PDF document text
- https://laps.pl/userfiles/file/33793003298.pdfIn PDF document text
- http://jtravel.clickis.kr/FileData/ckfinder/files/20210911_CF1B86C6440260A9.pdfIn PDF document text
- https://plasy.com/uploads/file/rudobokowimo.pdfIn PDF document text
- http://theseadiaries.com/ckfinder/userfiles/files/84766801128.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=7+letter+words+with+v+in+the+middlePDF 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_off0000d170.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD170 | 10456 bytes |
SHA-256: b8cffa9a1d0cb8b0a890cdcbdc2d7c07e4dba08746b1dd79c8bd9a297ada90ec |
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font_01_sfnt_off0000e906.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE906 | 17048 bytes |
SHA-256: 30e9abee2c121846001ecb39f369153f069a588f7b9fa8969b8f5bf04d01044c |
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font_02_sfnt_off0001151c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1151C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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