MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, with several heuristics indicating it functions as a link farm. Some of these links point to compromised CMS uploads, suggesting a potential distribution point for malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://ornito-silesia.eu/userfiles/file/wufozibedisakimikusawerel.pdf In PDF document text
- http://webbuilders.com/files/file/93172011455.pdfIn PDF document text
- http://clainvest.pl/userfiles/file/petexo.pdfIn PDF document text
- http://alliance-ic.ru/uploads/file/jufakolutusujotu.pdfIn PDF document text
- http://3colorjazz.com/fckeditor/userfiles/image/xenenaxuxulududomulem.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/nuxofeto.pdfIn PDF document text
- https://ferdavagnar.is/images/fck/file/83706775726.pdfIn PDF document text
- https://efficimm.fr/userfiles/files/52355379681.pdfIn PDF document text
- http://ydyb.com/filespath/files/20210908025457.pdfIn PDF document text
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/6ddc1eca40a2468047753bde6d4f06cc/25903133843.pdfIn PDF document text
- http://tmkb.org.tr/ckfinder/userfiles/files/jixuwasizuketurumirepi.pdfIn PDF document text
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/6330573cdfbb78d07142ad3bebe170f5/92481942933.pdfIn PDF document text
- https://ags-car.com/upload/files/99845911514.pdfIn PDF document text
- http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/15295897975.pdfIn PDF document text
- http://skrabl.pl/www/rpbd/fck/file/77465841961.pdfIn PDF document text
- http://autolavaggiocraparotta.it/userfiles/files/rezubajekew.pdfIn PDF document text
- http://worshipedia.net/sites/default/files/file/sikarutagixebunupixevowef.pdfIn PDF document text
- https://baoholaodong24.com/userfiles/file/91066053763.pdfIn PDF document text
- https://minhvuongthuphap.com/upload/ck/files/mobobifezurukenoso.pdfIn PDF document text
- http://moiarchitekci.pl/pliki/file/44870416366.pdfIn PDF document text
- http://biosafety.biz/ckfinder/userfiles/files/jovabovakajibaturor.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130506c25b10---69992052414.pdfIn PDF document text
- http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1613432c6d3d81---kufimanepo.pdfIn PDF document text
- http://plkorea77.com/ckupload/files/tadixaladalilerifotuxos.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=hello+kitty+lunchbox+mod+apkPDF 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_off0000dbfc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBFC | 17676 bytes |
SHA-256: d2b7e521cbd1a9022d581373809ef80ab817bd3bd6934f5ca311aea51eaabd51 |
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font_01_sfnt_off0001096d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1096D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012184.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12184 | 11052 bytes |
SHA-256: 0dab872fb4e4e36efab55a582babea3f5033be1d5fe6dd0095ea80f0d9a0917b |
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