MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document identified as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of external URIs and the nature of the heuristics suggest a phishing or malware distribution attempt, potentially initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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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://pistant.ru/uplcv?utm_term=acid+in+lungs+treatment
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160903e7f98727---10623272464.pdf
- https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/hvntb77oaj418escihhac0hq15/23389377973.pdf
- http://dorp.pl/userfiles/files/92585852624.pdf
- https://licorne-hotel-restaurant.com/userfiles/file/57947323226.pdf
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608222cc91b26---95081763471.pdf
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/92e58b6588e03ce8c8c3328ac00d62b7/wunopepozop.pdf
- https://hmanagement.net/userfiles/file/lafexijeva.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5c31434bd---febojedimagomenozulevefog.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/e7466bd070142e2ee8e0c25d84074222/34310974625.pdf
- http://centronegozi.com/public/54406961082.pdf
- https://facades-et-traditions.com/actualites/file/ruvewoxofi.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/04dn5ft80ob5i3s6hhvdbgte6j/saborikijonubopu.pdf
- https://protrialse.eu/files/files/4603395660.pdf
- https://tidaksusah.com/contents//files/gavokikozawexubojuzukive.pdf
- http://miracleschoolministries.com/survey/userfiles/files/wuluvotidazuzozugiduzaf.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ccc0433190---50382845137.pdf
- http://alibabashipping.com/userfiles/file/muxujer.pdf
- https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/64eb475e1bc674960918daa539805ddf/86406935695.pdf
- http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0a265f96b---majojewejasazatutuk.pdf
- https://flardochform.se/userfiles/file/gevodiwugaxogexoto.pdf
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/2d8047958a0d499ffe17377574aabec9/rexojagipelupivexim.pdf
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/710b032c2f75024bccf18c9a7517e75b/5248790952.pdf
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16073dbdd579d4---14700574532.pdf
- http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b38db950d03---zabedakig.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_off0000c827.bin2aa1558e345c9deb16afad1508835ef016ff1edbc3572e7e2b4a8c34f61d7311 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC827 | 16104 bytes |
font_01_sfnt_off0000f1de.bin57f59918f13fe16043f29f177a0dbaa384ab7a98f90224b7214937bda6333f63 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1DE | 10676 bytes |
font_02_sfnt_off00010a23.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A23 | 16792 bytes |
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