MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains numerous external links, with several pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 https://chcial.ru/uplcv?utm_term=como+quitar+manchas+de+tinta+negra+en+la+ropa
- https://centrorevisionimonregalese.it/file/76336978372.pdf
- http://sbairs.com/datas/files/53120610667.pdf
- http://fantalife.nl/userfiles/file/kukajigariwug.pdf
- http://ahs1968.com/clients/d/dc/dcea35c349c70fb55dca458fc6558ff6/File/25735900973.pdf
- http://hoanggiaphatland.com/uploads/image/files/6219494093.pdf
- https://advantagelic.com/singhania/downloads/file/gojisamugaxiwutiwuloma.pdf
- http://unicorn-furnitures.com/d/files/nadarigik.pdf
- http://wabasnb.com/files/fckeditor/file/4982072560eda8e52aa0d.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609b853856f71---90570048268.pdf
- http://juha.be/_files/file/97928348224.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5485b99f41---29694019532.pdf
- http://tantusmarina.com/UserFiles/file/pilubuwufo.pdf
- http://rayanchem.com/d/files/zamidonuvakurogunifuv.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/a7523d92fe66255718f06ef7ddeb5ed5/niduvabudizewutes.pdf
- http://alphabodysupplements.com/newerac2c/userfiles/file/ximute.pdf
- http://southport1969.com/clients/861680/File/28904525992.pdf
- https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/b509f492c44ecf77c4aa48da938074e4/sirisit.pdf
- http://hoitruyengiaocodocvietnam.com/uploads/image/files/22520246548.pdf
- http://donateagift.eu/userfiles/file/rivobodubug.pdf
- http://yummyschool.com/_UploadFile/Images/file/83119970603.pdf
- http://verkaufs-akademie.com/userfiles/file/xemuvasufeferudijasow.pdf
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/nqd3ein2q62lju8vu5rduvpaed/tonujijijavexoxatonumiji.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/fef145cd6b48b957e3935fdc37181ea2/36617218147.pdf
- http://vivaibonomo.it/userfiles/files/88032582729.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f64f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF64F | 16792 bytes |
font_01_sfnt_off00010e61.bine6fa248d406d9447b8dbbbcd31332deae36ee407a27cc2016d1892a941e83084 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E61 | 18492 bytes |
font_02_sfnt_off00013cc7.bin52442df38c9d9135a9c1409c349da72df5423857bd077d2b2ccbce381276ecd8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CC7 | 11240 bytes |
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