MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF containing embedded JavaScript, which is a common technique for exploiting vulnerabilities or delivering malicious content. The PDF also contains numerous external URIs, including one pointing to a raw IP address, suggesting an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://yao-cheng.com/uploadfiles/20210909202012.pdf In PDF document text
- https://hefcom-hydraulics.com/ckfinder/userfiles/files/52343212026.pdfIn PDF document text
- http://szermgrt.hu/uploads/ckfinder/userfiles/files/wozowixeginorajuxojutasid.pdfIn PDF document text
- https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16145ced514c1a---64203862408.pdfIn PDF document text
- http://richmediahouse.com/admin/uploads/file/fonejugifunekej.pdfIn PDF document text
- https://snqrsl.quebec/upload/editor/file/xaxikoxefi.pdfIn PDF document text
- http://shopcode.ru/uploads/file/zajejatamiwinuxav.pdfIn PDF document text
- https://ismart99.net/upload/files/92387666658.pdfIn PDF document text
- https://299-45.com/CKEdit/upload/files/76921327700.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136561ce15a9---fosajebo.pdfIn PDF document text
- https://kaptenhoki.com/contents/files/36236959858.pdfIn PDF document text
- https://foulardfotografando.it/file/savomebifiguwi.pdfIn PDF document text
- https://hygradeinsulators.com/images/uploads/file/bokijavekufuxuginoreturoz.pdfIn PDF document text
- http://scsychem.com/upload/files/84916890385.pdfIn PDF document text
- https://rowsontw.com/shopadmin/upload/files/tojawurofubujemukupitake.pdfIn PDF document text
- http://battlegrouponline.com/app/webroot/js/ckfinder/userfiles/files/wafubi.pdfIn PDF document text
- http://185.33.116.145/~acus01/upload/files/vunekimemi.pdfPDF link annotation
- http://wecans.net/_UploadFile/Images/file/bobet.pdfIn PDF document text
- http://fsanaq.com/upload/file/2109090510170407522jg6p6bxo3ov.pdfIn PDF document text
- http://bienchidan.org/uploads/files/55903932405.pdfIn PDF document text
- https://uroci-kursove.com/userfiles/file/72556652293.pdfIn PDF document text
- https://congchung7.vn/upload/file/jojulu.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/91681539543.pdfIn PDF document text
- https://fivetc.net/uploads/files/nuduvutevikufinoxisa.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=michael+h+hart+the+100+pdf+in+banglaPDF 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_off0000c700.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC700 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000df17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF17 | 10916 bytes |
SHA-256: 259a7a59c07a6e1bff40fe52b0560cd80ccb1beb57f7cc5f451cc0e69022d74b |
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font_02_sfnt_off0000f7e8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7E8 | 20420 bytes |
SHA-256: e7f31ad60e5042b997bc1d74599b12f4edc7f53f555bffae88ce184cd9da49b5 |
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