MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The presence of embedded JavaScript and a high number of external URIs, including a link farm on disposable hosting, strongly indicates malicious intent. The ML classifier and ClamAV detection further confirm this, flagging the PDF as malicious and likely a phishing or trojan delivery mechanism. The embedded JavaScript is likely used to initiate a download or redirect the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 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 https://zhbiotech.com/CKEdit/upload/files/70653837286.pdf In PDF document text
- https://cissud.eu/uploads/ck_editor/files/66400143429.pdfIn PDF document text
- http://workontext.ru/media/file/60020235761.pdfIn PDF document text
- http://massarentearchitettura.com/userfiles/files/kimudaxaxokerux.pdfIn PDF document text
- http://yey.uw52.com/upload/files/75314821826.pdfIn PDF document text
- http://phanmemerp.vn/attachment/files/29168741007.pdfIn PDF document text
- https://tranthachcaodanang.com/uploads/image/files/donejibipibada.pdfIn PDF document text
- https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161373b161cbb4---81586338129.pdfIn PDF document text
- http://tjsyjdq.com/v15/Upload/file/20219602265133.pdfIn PDF document text
- http://kidneytracker.com/ckfinder/userfiles/files/pifakegu.pdfIn PDF document text
- https://marblo.ph/app/webroot/img/files/kirepipinabulemurixiv.pdfIn PDF document text
- https://pima-alarms.net/slicice/file/50924743913.pdfIn PDF document text
- http://nenkin-t.com/upload_img/ck/files/35176741640.pdfIn PDF document text
- https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/161363e9eb3b12---22882138332.pdfIn PDF document text
- https://history.tlshaa.org.tw/ckfinder/userfiles/files/lamowekowebemifowajeb.pdfIn PDF document text
- http://studiodugnani.it/userfiles/files/jogobowunomulebagoxog.pdfIn PDF document text
- https://v-rshine.com/upload/images/files/33454676505.pdfIn PDF document text
- https://gym-rectif.fr/ckfinder/userfiles/files/movijupawolov.pdfIn PDF document text
- https://truckforceone.eu/upload/editor/file/32804244887.pdfIn PDF document text
- http://uniradioweb.info/userfiles/file/37491953651.pdfIn PDF document text
- http://parbatsamajjapan.com/img/files/files/20769277290.pdfIn PDF document text
- http://grandrosso.com/js/upload/files/vamaxexaruxoxaradukupofev.pdfIn PDF document text
- https://hanedantoptan.com/upload/files/zuseniruxulukiponaxafule.pdfIn PDF document text
- http://theprojectmanagement.guru/cote_dor_import/admin/ckfinder/userfiles/files/75214775887.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=ios+14.6+emojis+download+for+androidPDF 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_off0000b643.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB643 | 10948 bytes |
SHA-256: af245e98d790cdc7bad9809298e77f526778d5f60e1320621b360f1969fe6482 |
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font_01_sfnt_off0000cfac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFAC | 14196 bytes |
SHA-256: 2aba9defa1ef510da355e82c7bc2146e86d2521f10070463255765a4e13e7a6b |
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font_02_sfnt_off0000f2fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2FA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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