MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The file was detected as malicious by ClamAV and an ML classifier. Static analysis revealed it functions as a link farm, directing users to multiple compromised WordPress sites. These sites host further PDF files, suggesting a multi-stage attack or a distribution network for malicious content. The presence of numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://sns-russia.ru/userfiles/file/65873747598.pdf
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/samiecvnfme5i8mfrsn0qjauhv/vetuz.pdf
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/sohqnjpvq6jtua3k4ppdcml7ag/giked.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16075fb0c92560---63234129947.pdf
- http://yngc.ru/admin/ckfinder/userfiles/files/toworuwivolit.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160846973be9db---wakozibimigovubamuzos.pdf
- https://telenovella-bg.com/files/59841981396.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccb8e671bb---66209046604.pdf
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/puhu8lo6pucannvcu67u7hqqmh/26403277846.pdf
- https://gea99.com/ckfinder/userfiles/files/foxepuni.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ac220ef5e---nowotupimilemozekebukogub.pdf
- https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/5532438f1bb4ad17c4694e662e318a59/pamelesivavej.pdf
- https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/18a4365de87af2075fc4c5c97c69bef8/33270108513.pdf
- http://xn--or3bi2da319p.com/upload/fckeditor/file/ruvaxivorikomepudixorewox.pdf
- http://wittlich-luexem.de/userfiles/file/59592885252.pdf
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ueu9ct70olhmpuh6n06t3s73mh/44871337053.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+draw+the+back+of+a+person
- 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_off0000ec0e.bin7af3f0f29414b1735d8b0657ac7c396533139e4123e99a9f3a511191d90f9152 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC0E | 16524 bytes |
font_01_sfnt_off000116f6.bin76335cc5a5c3cd0d453ed5f5ee6116b48bec701369ea14abc21700625717530f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116F6 | 10888 bytes |
font_02_sfnt_off00012fe4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FE4 | 16792 bytes |
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