MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The PDF document contains a large number of external links pointing to other PDF files hosted on various disposable domains, a technique often used for SEO spam or phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, with the PDF being flagged as a phishing trojan. The embedded document body text, while seemingly innocuous, is likely a lure to encourage users to click the numerous links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://worizura.weebly.com/uploads/1/3/1/4/131437573/7750672.pdf In PDF document text
- https://gerbangkuis.com/contents/files/61695321216.pdfIn PDF document text
- https://kevotimobamos.weebly.com/uploads/1/3/1/6/131636762/7311338.pdfIn PDF document text
- http://nantong.chinatupai.com/web/js/ckfinder/userfiles/files/sitifotetelunenetobogi.pdfIn PDF document text
- https://najoduvojubowi.weebly.com/uploads/1/3/2/8/132815002/8c410.pdfIn PDF document text
- https://malitizume.weebly.com/uploads/1/3/4/0/134097131/aafda3bd0806.pdfIn PDF document text
- http://protech-t.hu/kcfinder/upload/files/26549265143.pdfIn PDF document text
- http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1620c1d04473da---bupaxelagelaliturulu.pdfIn PDF document text
- http://talentfuturesservices.com/sharpinstitute/images/files/fujironokovunofo.pdfIn PDF document text
- https://ramaxudefe.weebly.com/uploads/1/3/4/0/134042793/xuvubisotitodag.pdfIn PDF document text
- https://octvads.site/js/ckfinder/userfiles/files/naxafitemapumojolawaj.pdfIn PDF document text
- https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/7466233.pdfIn PDF document text
- https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/74cd5.pdfIn PDF document text
- https://mabamigetope.weebly.com/uploads/1/3/4/4/134493328/tikudowe-lidonijifer-soporixuru-fasorujut.pdfIn PDF document text
- http://vikingpaint.com/user_file/file/23087189104.pdfIn PDF document text
- http://www.verneteco.com/ckfinder/userfiles/files/desasida.pdfIn PDF document text
- https://saftehnika.com/upload/files/vavikabeze.pdfIn PDF document text
- https://kutubugovu.weebly.com/uploads/1/3/4/5/134581815/dedopisidoropapigupu.pdfIn PDF document text
- https://rixapozati.weebly.com/uploads/1/3/4/4/134456921/fikumebutafa.pdfIn PDF document text
- https://colod.co.za/YmrXLWy8?keyword=el%20diario%20de%20greg%20pel%C3%ADcula%20completa%20gratisPDF 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 extracted file (font_00_sfnt_off0000db20.bin)
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000db20.bin)
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000db20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB20 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f337.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF337 | 10900 bytes |
SHA-256: 36278fcd37e022635a82e0980fc7ea6ed7592c9d911b5fdd05e01919745920ad |
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font_02_sfnt_off00010c2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C2B | 18500 bytes |
SHA-256: a2c0b3525e20d72dbd751aa0bbeebed9977a1d578408915d28f0a44c0244ad1f |
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