MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. It contains numerous external links, many of which point to other PDF files hosted on disposable domains, indicating a link farm or redirection strategy. The heuristic PDF_RANDOM_URL_LINK specifically highlights a link to a generated URL, suggesting an attempt to obscure the final destination. While no scripts were explicitly extracted, the nature of the links and the ClamAV detection strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://infrive.ru/uplcv?utm_term=droid+serif+pro+wgl+regular+font+free+download PDF link annotation
- http://www.fonfe.com/uploads/files/57186050341.pdfIn PDF document text
- https://saksisan.com/upload/ckfinder/files/lemifi.pdfIn PDF document text
- http://unewstoday.com/task/userimages/file/46410064985.pdfIn PDF document text
- http://elvirajogsi.hu/ckfinder/userfiles/files/77328183848.pdfIn PDF document text
- http://j1ent.com/userfiles/file/20210901161125.pdfIn PDF document text
- https://tjpapigroup3.com/contents/files/12950754431.pdfIn PDF document text
- https://beeshark.ro/app/webroot/files/userfiles/files/golixugez.pdfIn PDF document text
- https://stthomasorthodoxchurchsouthpampady.com/userfiles/file/mutafodu.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137ad96c2ca5---1763329746.pdfIn PDF document text
- http://vindindex.nl/images/uploads/33613933272.pdfIn PDF document text
- http://clear-es.net/yamituki-n/uploads/files/36549393478.pdfIn PDF document text
- https://www.geya99.com/ckfinder/userfiles/files/razuvituxixazudosototuk.pdfIn PDF document text
- http://www.pantonerestauri.com/ckfinder/userfiles/files/38536714401.pdfIn PDF document text
- https://shevian.com/images/file/tufefoduvosuwezimez.pdfIn PDF document text
- https://anmoul.com/userfiles/file/laligitimojikoluke.pdfIn PDF document text
- http://auxerretv.com/content/public/file/suvudoletepifulojebabuvib.pdfIn PDF document text
- https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/bazowowalujumixe.pdfIn PDF document text
- http://cuacuongiare.vn/upload/files/16228915189.pdfIn PDF document text
- http://paulabenveniste.com/UserFiles/file/zuvovokexofixuwafixipuduf.pdfIn PDF document text
- https://8cj2aja7-8mxb.com/contents/files/bezatuwebanisofidalukopow.pdfIn PDF document text
- https://heuresromantiques.com/upload/files/janajefokofobumuzefunowem.pdfIn PDF document text
- https://mediaget.ru/userfiles/files/96922180349.pdfIn PDF document text
- http://www.salac.cz/ckfinder/userfiles/files/pibonudolorisixetizor.pdfIn PDF document text
- https://er-cardiff.com/eurostyl/photos/file/mokorerigodi.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_off0000bbef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBEF | 10860 bytes |
SHA-256: 89703481d0497c46747deea97b08bca5cbd41079f70e429095808dc869373279 |
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font_01_sfnt_off0000d4ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4FF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ed11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED11 | 16928 bytes |
SHA-256: 66b37fed819b1fbd777a3ae22decd966f2385f8af52765f4b2de077a7e60409d |
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