MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a spearphishing attachment attack vector. No scripts were extracted, but the PDF structure itself facilitates redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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=function+and+location+of+hypothalamus
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/90aog1llo64c1mj5v089l5o6l6/fafawopitowupaju.pdf
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c5719d51afa---fapinizakikibemof.pdf
- http://odumakus.com/uploads/files/89071601451.pdf
- http://atya.eu/files/file/vibikabesagapim.pdf
- http://3suntech.com/UploadFile/file/20210621193400191.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/c0cabe69580672937ff3869ffd9471f5/68771647096.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dce5622d4a5---12344975614.pdf
- https://tmtteks.com/files/pipirani.pdf
- http://lex-ter.ru/admin/ckfinder/userfiles/files/93025501164.pdf
- https://hostingyuvasi.com/calisma2/files/uploads/vaxevivuxolerajan.pdf
- https://airflow-skateboards.com/upload/file/34685393171.pdf
- http://weilandensemble.nl/ckfinder/userfiles/files/38719192825.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078755cbf3bd---fajefaradotinifoferaxalid.pdf
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e1a6e0e6f---96977289448.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2ee3ad744a9db69a6d593d6768a75dad/98330199682.pdf
- http://misspacificus.com/clients/873634/File/14179161523.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/7882f0aff3bf8ee2ed27c0ecc844c813/mapiwobosafosezamu.pdf
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/t8d4m1qhmip8mph6di8q55ij7a/68109130592.pdf
- https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/c03435bc8c3e145675361dc87c0148e5/vokabu.pdf
- http://fotografoenricogiampieri.it/userfiles/files/gatiwisurowolu.pdf
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160beedb568761---23130611332.pdf
- http://sieuthivatlieuhoanthien.com/upload/files/mipidopikisikajafeza.pdf
- http://21cedu.com/pds/userfiles/files/59840576422.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_off0000e237.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE237 | 16792 bytes |
font_01_sfnt_off0000fa49.bin5b863918c7f8af8b9b0e36cd7f31ca5f6ae164e41880cac5304c6544f5c9c036 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA49 | 16836 bytes |
font_02_sfnt_off000125e8.bine06a6c99e8bee4977c5fcff2c592b04a9e2e1d95acad70d4f851278eb6ce1e59 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125E8 | 10844 bytes |
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