MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to numerous distinct domains, including the suspicious URL 'https://archism.ru/uplcv?utm_term=best+free+circuit+simulator+for+android'. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the overall structure and external links strongly suggest a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://archism.ru/uplcv?utm_term=best+free+circuit+simulator+for+android PDF link annotation
- https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/58393831128.pdfIn PDF document text
- http://effektfilm.de/files/file/94091831977.pdfIn PDF document text
- http://sanraimundo.cl/dyn/uploads/file/zofolamidaguwux.pdfIn PDF document text
- http://hotelbelleepoque.bg/userfiles/file/57712275875.pdfIn PDF document text
- https://aradmissions.com/ci/userfiles/files/1130358986.pdfIn PDF document text
- http://retailpark.bg/uploads/wysiwyg/files/83534017822.pdfIn PDF document text
- http://89928386.com/uploads/files/202109140335162747.pdfIn PDF document text
- https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/xetademolevagiwawizojol.pdfIn PDF document text
- http://magendans.com/imagefiles/file/92037501715.pdfIn PDF document text
- http://netart.hu/userfiles/file/lunuparesaxerawusalo.pdfIn PDF document text
- https://remini.hu/userfiles/file/jifamonejoludelubib.pdfIn PDF document text
- https://ljlconst.com/admin/images/file/57390935826.pdfIn PDF document text
- http://autoscuolepintozzi.it/userfiles/files/60890405848.pdfIn PDF document text
- http://avandcie-energy.com/ckfinder/userfiles/files/xiduguzinerimow.pdfIn PDF document text
- http://www.agenbenangbandung.net/file/seguretilajafabedas.pdfIn PDF document text
- https://b2b-intelligence.it/uploads/file/jodasiganuwakatetuta.pdfIn PDF document text
- http://receptlap.hu/files/kujekitugibedazudorit.pdfIn PDF document text
- http://thewellmanteam.com/userfiles/files/fijuvuduvofijabome.pdfIn PDF document text
- http://superazs.ru/images/news/file/lixojofi.pdfIn PDF document text
- https://www.borzabadi.com/ckfinder/userfiles/files/98699475069.pdfIn PDF document text
- http://kronospan-mofa.hu/editor_up/wizuzud.pdfIn PDF document text
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16144cafc78c7f---95527246275.pdfIn PDF document text
- http://hondasushi.com/uploads/files/zekogajoji.pdfIn PDF document text
- https://www.mmgrowersg.com/ckfinder/userfiles/files/96659084513.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_off0000e6af.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6AF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fec6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC6 | 10788 bytes |
SHA-256: 6d5f12bdeadfa5a69eb56edf399a51976ff62e888bb70a4e61877c64a0f82c07 |
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font_02_sfnt_off000117a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117A3 | 17644 bytes |
SHA-256: 744e18c8a2dde982778efea50b7379d4546a77c09a90069d603f42ad59d4cd02 |
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