MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV also strongly indicated maliciousness, specifically classifying it as a phishing trojan. The embedded URLs suggest the document's purpose is to redirect users to potentially malicious sites, likely for phishing or malware distribution.
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://wastran.ru/uplcv?utm_term=android+weather+underground+widget PDF link annotation
- https://saikekanglun.com/filespath/files/20210907012134.pdfIn PDF document text
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/161353e3fb07b8---negusudepasipawisulutexif.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/0da01b2384eecfdc1bf1e681274844ca/vuladipulaxiza.pdfIn PDF document text
- https://candbco.com/ckfinder/userfiles/files/96694605667.pdfIn PDF document text
- https://stgeorgedentalcare.in/ckfinder/userfiles/files/wodemosejugu.pdfIn PDF document text
- http://colantuono.it/userfiles/files/supanog.pdfIn PDF document text
- http://osteriadelcampanile.com/userfiles/files/tegekaveranevuta.pdfIn PDF document text
- http://kiuanai.com/userfiles/file/femiwalejolafaw.pdfIn PDF document text
- https://transturist.ba/ckeditor/ckfinder/files/files/71903550193.pdfIn PDF document text
- http://fotossc.pl/_files/file/kilefotapud.pdfIn PDF document text
- http://cyuanmei.com/userfiles/file/95126805328.pdfIn PDF document text
- http://bienbao.net/uploads/files/bawijeza.pdfIn PDF document text
- http://uralteplostroy.ru/content/file/94741701897.pdfIn PDF document text
- http://bukvoznaika.ru/ckfinder/userfiles/files/76402438114.pdfIn PDF document text
- http://around-sicily.net/userfiles/file/wemefatuf.pdfIn PDF document text
- http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16137011c923fe---bazorusip.pdfIn PDF document text
- http://vipbeachhouse.com/uploads/editor/file/xunetutabar.pdfIn PDF document text
- http://china-engine.net/ckfinder/userfiles/files/41128854840.pdfIn PDF document text
- http://neuchina.org/userfiles/file/73249815953.pdfIn PDF document text
- http://6nergy.fr/6nergy/sites/default/user/file/kudutukekon.pdfIn PDF document text
- https://saunadlaciebie.pl/userfiles/file/23001878641.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613362b02f1c8---5298418898.pdfIn PDF document text
- https://a-guskov.ru/uploads/files/rufefe.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e077.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE077 | 17580 bytes |
SHA-256: 538f7b7ad3a94b6efe25295249cce4c2353e9fd08bc330e593fb890bc4fc77f6 |
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font_01_sfnt_off00010dbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DBC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000125d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125D3 | 10480 bytes |
SHA-256: 82bcafe72136bf25ee06082683f29744cf48d30b1dd5d1b3a9d23be436472ed3 |
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