MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which are part of link farms hosted on disposable domains or compromised websites, suggesting a phishing or malware distribution scheme. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document may be instructing users to decrypt an archive, likely containing a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9959
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://drafthe.ru/uplcv?utm_term=descargar+office+2013+gratis+para+windows+7+64+bits+mega
- http://sungsam.net/userData/board/file/26771100769.pdf
- https://chaletsuenodesol.de/files/zobugozupikilezoxajob.pdf
- https://edubox.mn/uploads/users/0/files/86560390892.pdf
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/5p8hb9qb0pokrer4j50evjitd6/ronomilediwetetowedudop.pdf
- http://popeyebio.com/upload/files/37871413325.pdf
- http://gtlmarinefuel.com/userfiles/file/nazaxubinubeninupegux.pdf
- http://www.ks-klinika.ru/ckfinder/userfiles/files/68013792516.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610615017eb15---bolijuribogevaf.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/216f58ac37e1ca05aeefa924098d1a77/pakarejenilenitaniwened.pdf
- http://fine-trading-knotwork.de/uploads/media/xugojafifas.pdf
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160838c942bfd1---pitufe.pdf
- http://montaze.org/democms/userfiles/file/vemixorel.pdf
- http://honderhotel.com/UploadFiles/FCKeditor/20210813034114.pdf
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/i84n5pcuqjpn0i0o23c8do8gm2/nower.pdf
- http://soupworld.de/upload/file/miwodirivisazobi.pdf
- http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/ebu9ur37qk6limvadeu1lqeg46/tokojuga.pdf
- http://markfarolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tufuxukafe.pdf
- http://simkoongschool.com/uploads/editer/files/koreson.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a38e3ea8066---xegekutamowa.pdf
- http://www.dramayaramendes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9c5396178---69830861202.pdf
- https://www.funes.gob.ar/ckfinder/userfiles/files/48813175069.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee1c.binf5e881c92ae149509be9e93200f835c515c90b0cf7c28fa8cc438a792a753e76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE1C | 16272 bytes |
font_01_sfnt_off00010431.binfdc604daa71b8ed2c63bcce011c0973c0213c62ec667d75ce577f9ddedc821c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10431 | 20592 bytes |
font_02_sfnt_off0001373c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1373C | 16792 bytes |
font_03_sfnt_off00014f53.bin881ac39d5835dd86b64783588895fa6b732e9bb6a1c07c63609af3db7f7ed0e8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F53 | 11908 bytes |
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