MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The PDF file was identified as malicious by ClamAV and an ML classifier. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised CMS upload directories. These links likely serve as a distribution mechanism for phishing or further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
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://humboldthighclassof79.com/clients/1/19/19f040aad945c40a0acbd79abd3dc6cb/File/25804430204.pdf In PDF document text
- https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/3f81c57d98efb9eef69b7a8ad2ec50b6/99767829814.pdfIn PDF document text
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c76eb1710---2857378815.pdfIn PDF document text
- https://kop-trans.pl/uploads/userfiles/files/zatobonadev.pdfIn PDF document text
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a284c936b63---32339160573.pdfIn PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/2f4e5f296a27d07739d14dc34ec0ea93/83700499638.pdfIn PDF document text
- http://randoquad72.fr/userfiles/file/1434990345.pdfIn PDF document text
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f1a3c9de94c---dodaxazexoboxurakasalemun.pdfIn PDF document text
- http://hoinhikhoavn.com/img/files/97801664675.pdfIn PDF document text
- http://hillsdale66ersreunion.com/clients/c/c6/c679c52642bc64dd8629b98fb95ccc77/File/bazupizuzisalaxixireno.pdfIn PDF document text
- http://indovinandoilmondo.it/themes/userfiles//files/nosodesotugagibobaduxebiz.pdfIn PDF document text
- http://sqc.jp/user_data/editor/ckfinder/core/connector/php/upload/files/tiduxadadijegilube.pdfIn PDF document text
- https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/ea6f5d387ec39e0a9d07894580d06a52/19004831642.pdfIn PDF document text
- http://bociany.sk/media/file/24795577157.pdfIn PDF document text
- http://stolizstekla.ru/userfiles/file/50463453752.pdfIn PDF document text
- https://jkmart.net/FCKFiles/File/33698398790.pdfIn PDF document text
- https://discoverthesky.it/file/33217932099.pdfIn PDF document text
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080519cc0edf---81750364477.pdfIn PDF document text
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f46daac3be---xenub.pdfIn PDF document text
- https://berettyotv.hu/userfiles/files/regusumumanosaro.pdfIn PDF document text
- https://cristalparkhotel.com/ckfinder/userfiles/files/41192832925.pdfIn PDF document text
- http://www.oiseaubleu-promo.fr/userfiles/file/xasenotexabamawekamokajax.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=tomsk+russia+mapPDF link annotation
- 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_off0000c119.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC119 | 10188 bytes |
SHA-256: 1ca438c03164e1ba3c113d961a5ce109ccccbe27f16b11939977a3f4c8913023 |
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font_01_sfnt_off0000d7e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E9 | 17188 bytes |
SHA-256: 7583f87683ae31214853a9ca74838b21a678b434a9503f6551c16f7713ab46b2 |
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font_02_sfnt_off000104f5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104F5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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