MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to multiple compromised WordPress sites and other disposable hosting domains. The embedded URLs, such as 'https://ketchas.ru/uplcv?utm_term=potentially+exempt+transfer', are likely used to distribute further malicious content or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://ketchas.ru/uplcv?utm_term=potentially+exempt+transfer
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee145bceac.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c4bc5af1f64---80335611296.pdf
- http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16095365d9b012---ramagu.pdf
- http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/40204634250.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a1453373800---jetebirubukirabanerotena.pdf
- http://trungtinjsc.vn/upload/FCK/file/bufaxazefofoxeragegopaved.pdf
- http://alnoorcity.com/userfiles/file/50467036678.pdf
- http://anhbanglaw.com/userfiles/file/febopefin.pdf
- http://technocom.pl/editor/file/nizota.pdf
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16084be4035390---dafabamolaponanuxejabab.pdf
- https://giridhareye.org/ckfinder/userfiles/files/41149044925.pdf
- https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/fc0bd5541866f80c5aba92fa22c6100c/3911924568.pdf
- http://arlingtonhigh1961.com/clients/e/ef/ef36f0800c0a5d5a0b00d5ecc8c3c6da/File/67297699990.pdf
- http://classicalgardenornaments.com/uplds/file/73432402880.pdf
- http://thuephotocopytaihanoi.com/upload/files/6384932994.pdf
- https://aimhc.com/userfiles/file/gabegagexitizubazo.pdf
- http://writtenmail.com/upload_images/file/nalikiman.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096961e0b2d8---21351528497.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/316336cfd29730e1d3941db172e8d36f/92606526035.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/26fjmssibl6pqg43ahgiqnbul3/47885791803.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac22ccc097d---togixezanomap.pdf
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606f28358ae4a---nesoxiwarifefadosudutog.pdf
- https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16098238370cf7---64005978494.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_off0000e422.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE422 | 16792 bytes |
font_01_sfnt_off0000fc39.bin2af2dc793468517eb7016b404a388451c68310f5c20b814323c277d094d1162b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC39 | 10736 bytes |
font_02_sfnt_off000114f0.bin5fc47d13bc1cde2c293855d7a0a0f7db5ed34d97c3b693f6fb6b25958b6e8043 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114F0 | 17132 bytes |
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