MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains a link farm pointing to multiple compromised CMS upload directories, suggesting an attempt to obscure the true destination. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a pattern of redirecting users through potentially malicious sites. The document body is heavily obfuscated and unreadable, providing no direct content-based clues.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 http://brukbet.com/user_images/file/87764067880.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16075026830cfe---motes.pdf
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/facb5332e3c349b63674bd6c86c470f2/zidolaxamu.pdf
- http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607718c77a4d7---2729469047.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/18b8983fc01dbe65d80253aca4ffe39c/85445068066.pdf
- http://kiiga.ru/userfiles/file/pofosor.pdf
- http://ledseoul.com/userData/board/file/nazazafilutafevozibesinu.pdf
- https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/4cedf0ba14022f45803cfb17c35a9c13/kobelubojitenoxumelu.pdf
- https://pui-vital.ro/msg_media/file/1487004937.pdf
- https://esprimagroup.com/userfiles/file/gomox.pdf
- http://pokewaveanaheim.com/uploads/files/18163218581.pdf
- http://elskup.pl/images/assets/file/57561089935.pdf
- https://yasacompany.com/upload/files/zapexadaxajubakakepod.pdf
- http://mlight.cz/archiv/file/41656292453.pdf
- https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/t8bkq1oqfp7bd8stnjn7v2c0dl/wukusujegefunid.pdf
- http://xn--2e0b30g3uq7pay7m.com/upload/fckeditor/file/pupopebusagame.pdf
- http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kinilazelakumi.pdf
- https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/bfbdd5bf29690ec510683b828eadafdf/bewadifadofixufula.pdf
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/984n2sf52h03a8e4oanbv4fvrv/velezerawuzobeki.pdf
- https://hagepoorter.be/files/files/bililajizatokewebud.pdf
- http://thingsantiquesla.com/userfiles/files/23961556686.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=codigo+de+colores+de+resistencias+ejercicios+resueltos+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_off0000b9b6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB9B6 | 16792 bytes |
font_01_sfnt_off0000d1c8.bin1744e1ba3c75a70b8798434db49cb956aa904757db0d1e1a9177a58ce2e4e2af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1C8 | 16456 bytes |
font_02_sfnt_off0000faae.bin25ab9761095f57e98871a755826d7950c4dc4d6f41d16a727ac80c8a96e0f486 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAAE | 11056 bytes |
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