MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users. The primary purpose appears to be directing users to external, potentially malicious, content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://krisoc.ru/uplcv?utm_term=the+writing+ball
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160be0a5f03775---63458352651.pdf
- https://bestofbucerias.com/upload/file/62670591669.pdf
- http://naitikfashions.com/ckfinder/userfiles/files/ziwopiworerupomafofes.pdf
- http://bularz-auto.pl/images/userfiles/file/dejewasodipipuxasigukum.pdf
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/1607a40993175c---44923049694.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082eb54c8a24---wuwimokarofo.pdf
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/abnvasl57732vcrd9nv27e3c77/14831422108.pdf
- https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/2kta0rq49lqu0j4dnu8r02e7d3/68844236706.pdf
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/5d1582d48818bc366e354833ae9c5eaa/67978075473.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/5igk2lcqg0b802jtnph88ir7dd/49612157491.pdf
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3d7357141---kijanilukib.pdf
- https://ekselantechnology.solutions/ckfinder/userfiles/files/tinuselerefuj.pdf
- https://cplastik.cz/data/cms/file/futixafepefipi.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3593340db6---47272094545.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/aaf515f805ecdc684344012a0ea387b0/riveda.pdf
- http://rideco.hu/upload/file/93377932573.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/2a13843a00bf4b2593ba5239954eba45/dukurejubed.pdf
- http://s8radziejowice-paszkow.pl/userfiles/file/45549209676.pdf
- http://amdind.com/userfiles/file/76006469528.pdf
- http://domeinbeverdonk.be/assets/files/file/38197760235.pdf
- http://cdseoulps.com/uploadfile/fckeditor/file/kuwowaji.pdf
- http://scholl2021.com/clients/1/19/19bca4f76d5065ca3bffbfc1c67e7925/File/wobefutuzujovigiwesew.pdf
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160751463d419d---xekidatimadibejemer.pdf
- http://doverhighschoolhalloffame.com/clients/2/2d/2d76883e1086210ef8e2c43836b0327f/File/77857041452.pdf
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/oruou4eupn7l56ao1fs3dvfnu5/suxobikixedezigikajereda.pdf
- http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ce545c8ed---56591854215.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_off0000f2cd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2CD | 16792 bytes |
font_01_sfnt_off00010adf.bin312c4ce694053cae670393742e83b97579cc952bf5c900ec7082feba0711095f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10ADF | 17296 bytes |
font_02_sfnt_off000137d8.bin8832f0295312b7c8637840c459b0789b7a733d398f1a9ae70dcb9998369c44f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x137D8 | 10288 bytes |
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