MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised CMS upload storage, suggesting it functions as a link farm to distribute phishing or malware. The presence of embedded URLs and the nature of the heuristics point towards a spearphishing attachment attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9800
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://smidgel.ru/uplcv?utm_term=virginian+long+ride+to+wind+river
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/pj0ahu34bm82hg1h9og1u75cdk/fovarejekexuruzisada.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba17944ec67---97271530506.pdf
- http://splogservice.ru/content/file/posixowivujol.pdf
- https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/d2e1420a0c10eeecd5e45d67d4fbbb1e/1267728238.pdf
- http://mextro.de/upload/files/74577485053.pdf
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/fac193455e306c99f084df918a6fe62b/71129268028.pdf
- http://k-yoga.org/file_upload/spaw_upload/file/20210601235135.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/mifjevtncmk17a6gs5ktrk32o1/bexisezuzolusaj.pdf
- https://hizlipin.com/calisma2/files/uploads/87580149147.pdf
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070e9542313f---20308825369.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a63cedb39e5---tunerokesejogukutelujoz.pdf
- https://tavio.ru/files/file/36799872476.pdf
- http://interstyle.org/content/xuploadimages/file/juriru.pdf
- https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/74a972d280a6c330d905f598b9a183c2/fixulubu.pdf
- http://harasim.cz/uploaded/files/30573120468.pdf
- http://sdds.be/userfiles/file/89265461516.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/02f503584171a2311796e85d8e0663e0/garebuvokuwixenafafiga.pdf
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/sphedjtfnvdltgnt8vfu6b5rdp/pilifujazezizasonus.pdf
- https://angelsstaff.com/uploads/file/sinojidamonogojixewuzow.pdf
- http://novosib-sport.ru/ckfinder/userfiles/files/fowesipixaxuwetugozavu.pdf
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1609fba80701de---wedamelokazaluwirana.pdf
- http://sibmetiz.ru/upload_picture/26269556762.pdf
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc87655fe0---wilowaxibitovisedopam.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bf71e3320aa---15569986574.pdf
- https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/8b8fd92812f6c5e7af089816b23770f9/63619518773.pdf
- http://sanitaerprofi.ch/fckeditor/editor/images/file/mularopufaliwimonevilu.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_off00012605.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12605 | 16792 bytes |
font_01_sfnt_off00013e17.bin7b4c05a005464d0b69c0c3bd39cd74d76e896d57f79065adf7bb669d60e2fd6c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E17 | 17216 bytes |
font_02_sfnt_off00016aca.bin6ec78aef70842168469b4a0ee8bd8070f91a2d0f72f0f628ecf958e7d5c7ddd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16ACA | 10376 bytes |
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