MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many hosted on compromised CMS uploads or disposable domains, 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 phishing or credential harvesting attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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://smidgel.ru/uplcv?utm_term=relations+and+functions+pdf+class+11
- http://annamsaigonlaw.com/upload/files/jutideruzonegexada.pdf
- http://msamerica.net/clients/873634/File/53157839107.pdf
- http://fairmonteast1978.com/clients/71195/File/segevuzusexapun.pdf
- https://upbilbao.com/ckfinder/userfiles/files/17845777870.pdf
- https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1df7f2c4f---jopazijiwodirad.pdf
- http://videotour24.com/data/fckupload/file/zepegejejazipakakex.pdf
- http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab758ca89f0---pidujowijirikaf.pdf
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f86f74c9a---93987597650.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608c140e903c7---konafotosasatin.pdf
- https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6ade1bdf4---4727424404.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c89b8c5c058---jexoximumenemajevera.pdf
- https://arerp.kr/data/file///xifuzufizovuguzux.pdf
- http://dienvietbac.com/uploads/files/gavimatewikokusezusof.pdf
- http://hzzxtl.com/UploadFile/file/20210728062328198.pdf
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/562673fb665c554283466d75968854bf/fexonusumaxuravi.pdf
- http://1utilaje.ro/mm/file/86548697773.pdf
- http://bbbswalkforkids.com/clients/c/cf/cf8d0549bdc9bbdffca8bc0db9808b96/File/jujipitef.pdf
- http://irina-beha.com/ckfinder/userfiles/files/77048858457.pdf
- http://fine-cottage.ru/userfiles/files/guguxudobediko.pdf
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608342dfa0795---gojejifefopozoguva.pdf
- http://interwork.sk/userfiles/file/sogosag.pdf
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607372e0902ea---23625254820.pdf
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/fd890147c2f1df427f7828167492b7d4/fuminaxelim.pdf
- http://movietek.vn/hinh-anh/files/68690422344.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_off0000c9a1.bin766f70e7fc9270a915766e8bad2747a47b1ac2d5d12350c5c0ba8da59b8398ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9A1 | 10708 bytes |
font_01_sfnt_off0000e261.bin6a60ce5dfaacc97f6e092fae48796a6a68454dce70b2a04010fb99ab09a18bef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE261 | 17880 bytes |
font_02_sfnt_off00011009.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11009 | 16792 bytes |
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