MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the document functions as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting. These links likely serve to redirect users to phishing sites or download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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 http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081b62698354---vowovudituduto.pdf
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202104290520231065.pdf
- http://arci-mp.fr/admin/File/53772311521.pdf
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/35ff81e96a5e2ac228284a945cad9622/jinivifonavefok.pdf
- http://businessdevelopmentcenter.pl/uploads/userfiles/files/43615792739.pdf
- http://timavoshipsupply.it/userfiles/file/14370972380.pdf
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160773273d6313---kozasigoz.pdf
- http://thestarbusan.net/FileData/ckfinder/files/20210625_F866B350B205C136.pdf
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/be519460f357b7379cf26bb84c8b609b/53633595113.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607b97f7a12b2---zetunanuvagifodova.pdf
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ca5771e8eeb---rasifu.pdf
- http://lncxjzxxw.com/upload_fck/file/2021-6-28/20210628164754717963.pdf
- https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/e21f8495857f0961ae35b6fe08b69b3c/38290955733.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddfea94deac---15019762701.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/26758f22cf17727d8bc74f910bfc936d/93087249413.pdf
- https://emilline.dk/ckfinder/userfiles/files/fologef.pdf
- https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/348b0e3ddbb294592c2c985b94c4fa2e/92025109100.pdf
- http://msinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/dovixojatukigera.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e6b389bab5---guvuxasol.pdf
- http://healthywithhart.com/res/file/98717064179.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=population+community+and+ecosystem+worksheet+section+g+answers
- 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_off000113c3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x113C3 | 16792 bytes |
font_01_sfnt_off00012bd5.bin31924ba1dfe0c8eac60cd56e39d4873cb73aa4c0f83af5b4654e4f174e526a3b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BD5 | 17552 bytes |
font_02_sfnt_off000159c4.bin46b8c59c138bce616c87c0e232f8d52cfecfdd1a7bc1685f4a83f48b2c4ea7ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x159C4 | 11356 bytes |
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