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. Numerous heuristics point to the PDF acting as a link farm, directing users to compromised CMS uploads and disposable hosting sites, suggesting a phishing or malware distribution scheme. The embedded URLs, such as 'https://ketchas.ru/uplcv?utm_term=excel+vba+pdf+download', are likely part of this lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://ketchas.ru/uplcv?utm_term=excel+vba+pdf+download
- http://dienlanhhuubinh.com/upload/files/tizikugufokopin.pdf
- http://parvazyab.net/basefile/api203/files/36431522878.pdf
- http://turnwealthy.com/ckfinder/userfiles/files/febapakafirap.pdf
- http://prasongp.com/file_media/file_image/file/16681961256.pdf
- https://presstone.hu/userfiles/file/zewezatalavowemakuroj.pdf
- http://jamones-luna.shopcloud.es/ckfinder/userfiles/files/13406399137.pdf
- http://gemculture.com/userfiles/file/ruweruwebososev.pdf
- http://champaigncursillo.com/userfiles/file/bikor.pdf
- http://wangyiphk.com/userfiles/95386898612.pdf
- https://giridhareye.org/ckfinder/userfiles/files/4764178149.pdf
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614176e23fa61---moralujobexukogevupokezes.pdf
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134490168253---kivaguraduzigunon.pdf
- https://volnynaklad.cz/data/file/27134136481.pdf
- https://villadorottya.hu/uploads/frontend/files/99317983746.pdf
- https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/50ebb1162110ffb09c4dbe76cae3857d/50955916968.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/161492add31ddd---84810271673.pdf
- https://fancybox.pamlskovnik.cz/ckfinder/userfiles/files/vatibeguso.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/161326d418e50b---50337016481.pdf
- http://www.autoservis-hubatka.cz/admin/upload/ww/file/72769540844.pdf
- http://tovicetour.com/FileData/ckfinder/files/20210909_20D6682F36E9DEFC.pdf
- https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/17205345593.pdf
- http://baovethanglongmb.com/upload/files/87316606945.pdf
- http://riasztoszolnok.hu/admin/fck_upload/file/88550978386.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/7ce42866592d513f340fc33b86256abd/vuvofu.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_off0000cacd.bine9c84e9adf6ec70eff6c3b0233cfc0cf758fbb40d9e111b57c967dec95396fdf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCACD | 17944 bytes |
font_01_sfnt_off0000f946.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF946 | 16792 bytes |
font_02_sfnt_off0001115d.bincf717676ff019e84bcacfdec8deebd9ca2b2062027b9b09b26512ca093d9a64b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1115D | 10532 bytes |
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