MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The embedded JavaScript is a common technique for initiating malicious actions within PDFs.
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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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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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://smidgel.ru/uplcv?utm_term=how+to+update+calendar+on+android PDF link annotation
- https://matteagianotti.ch/userfiles/files/kexujurofivasuz.pdfIn PDF document text
- http://sushiloverca.com/uploads/files/32050439033.pdfIn PDF document text
- http://hydrem.ru/images/file/raxejasozotexigusonolepa.pdfIn PDF document text
- http://bakineshr.az/ckfinder/userfiles/files/9490713977.pdfIn PDF document text
- http://richmore.kr/uploadfile/fckeditor/file/jozakixokorejetarekigus.pdfIn PDF document text
- https://fullhousetourism.com/UploadFiles/file/20210906032313173.pdfIn PDF document text
- https://divanich96.ru/admin/ckfinder/userfiles/files/loxaxejisi.pdfIn PDF document text
- http://xn----7sbakn3aoflleitf3m6a.xn--p1ai/userfiles/file/rakivirulejerisanepife.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/d6b9c041401912b5e0fe7f3008f7b63b/wobexura.pdfIn PDF document text
- http://hzbmsj.net/images/upload/File/75505982649.pdfIn PDF document text
- http://wannawwannie.pl/userfiles/file/pufujedisa.pdfIn PDF document text
- https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130d1d088545---rulakagija.pdfIn PDF document text
- http://tlca.com/Content/uploads/files/xosudig.pdfIn PDF document text
- http://alompar.hu/uploads/content_files/files/tagifixo.pdfIn PDF document text
- http://pileki.com/imgup/file/vejin.pdfIn PDF document text
- http://chonburi33.com/userfiles/file/ralaveno.pdfIn PDF document text
- http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/19525128645.pdfIn PDF document text
- https://ooobelkom.ru/ckfinder/userfiles/files/dikerodi.pdfIn PDF document text
- https://sluganarodu.org/userfiles/files/18467048511.pdfIn PDF document text
- http://datacomsystems.cz/userfiles/file/30976019724.pdfIn PDF document text
- http://berbun.com/user_img/file/toxudepebugibatemobobezof.pdfIn PDF document text
- https://clumba-indoor.ru/files/files/939312791.pdfIn PDF document text
- https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7f91082f8---34371127256.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_off0000bc3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC3D | 10516 bytes |
SHA-256: c67d0fbba16cb109fb766055bc45dfc3f035992edfbda0dd862c246abdf0723b |
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font_01_sfnt_off0000d440.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD440 | 18164 bytes |
SHA-256: d6cae126607612044b463b692b14cd5547f4833d1fdbfe1bc09b3a82618efcc5 |
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font_02_sfnt_off00010353.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10353 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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