MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this. The document body is heavily obfuscated and unreadable, providing no direct content clues.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://gymostrov.org/gymostrov/userfiles/file/wunafizulikoxadugosevulo.pdf In PDF document text
- https://martensmgt.com/business_school/uploads/file/4059310044.pdfIn PDF document text
- http://resetimpianti.it/reset/public/file/xavaxufonebibizuxomawaju.pdfIn PDF document text
- http://kiko168.com/UploadFile/file/20210909160346258.pdfIn PDF document text
- http://chinalanpa.com/images/upload/File/38030097373.pdfIn PDF document text
- http://sireny.net/share/files/16118080946.pdfIn PDF document text
- http://100gastro.cz/soubory/files/70443623302.pdfIn PDF document text
- http://generaltubi.com/container/ckfiles/files/89862799424.pdfIn PDF document text
- http://muaah.ca/userfiles/files/xexogezatopupexuri.pdfIn PDF document text
- http://spellenindex.nl/images/uploads/22984017158.pdfIn PDF document text
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/cb9d24f5fcf04f100677971e742ad4d6/nonupuvolusetu.pdfIn PDF document text
- http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/5ddcb9da972014af49f04f4952cdd36e/25018171640.pdfIn PDF document text
- http://ephtour.com/FileData/ckfinder/files/20210913_823EA3E4366577A1.pdfIn PDF document text
- http://www.vnos.vn/app/webroot/uploads/files/66479874740.pdfIn PDF document text
- http://toroisg.com/public/images/files/73648695444.pdfIn PDF document text
- http://jamesandsons.ca/userfiles/file/jafunorufat.pdfIn PDF document text
- http://conganbacgiang.vn/app/webroot/uploads/files/fibakotalawewevaro.pdfIn PDF document text
- https://juhaszautovill.hu/userfiles/file/6705467618.pdfIn PDF document text
- http://flywings.sk/UserFiles/file/zogidif.pdfIn PDF document text
- https://rireenfrance.com/images/upload/files/99544412520.pdfIn PDF document text
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e169c692d4---92377563066.pdfIn PDF document text
- http://geriatriccarenewjersey.com/userfiles/files/16847925247.pdfIn PDF document text
- http://ciarajewellery.com/editor_upload/file/podot.pdfIn PDF document text
- http://lesen-und-schenken.de/userfiles/files/74756481504.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=a+quiet+place+ii+cinemaPDF 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_off0000b8cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB8CB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d0e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0E2 | 10376 bytes |
SHA-256: 00e2d7ac931c784f8347be010e7e6a1699d96f91aa13ec3d0c98cd8e0f551d24 |
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font_02_sfnt_off0000e84d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE84D | 16312 bytes |
SHA-256: 5f79e714dd119f0d6a9c9bbfb377a94af6f7e79b86b1a503aa90d6139db8aee2 |
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