MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous external URLs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://synerhu.ru/uplcv?utm_term=how+to+run+channel+auto+scan+on+element+tv+without+remote
- http://gocchame.vn/app/webroot/img/uploads/files/lomafo.pdf
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160f020a787414---dikomuzefadagigutibuwe.pdf
- https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb7b79c4ce---kilun.pdf
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aab2dbb7e8a---xititizivorojiw.pdf
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/1f6c857a87c541e3101dfc751af1752c/lozavowukizasiwu.pdf
- http://dabbleanddesign.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/xawekowutaximiwek.pdf
- http://sdes.in/uploads/mukejek.pdf
- https://digireg.nz/upload/28505350112.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160abf5515e967---xuvuvizalukerujawoz.pdf
- http://tuvanluatdanang.com/upload/ck/files/85858492929.pdf
- https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbb051609b---xufif.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160711c416d75b---sefasosovo.pdf
- http://dermalab.pl/userfiles/file/71750986776.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/85975389890.pdf
- http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ecda648e7---31022812797.pdf
- http://dienlanhlongan.com/upload/files/wisevoz.pdf
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c5043a033---40246023210.pdf
- https://istruttorecinofilo.it/userfiles/file/5282435700.pdf
- https://xo-sound.ru/userfiles/file/11730516510.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/cr2laq33cu2udd953np3unvtt2/62840443323.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/8312221e4467f9c87063c47a07aa3767/76168821610.pdf
- http://aire-limpio.com/img/editor/file/lolupesimaletitosar.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_off0000e7d7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7D7 | 16792 bytes |
font_01_sfnt_off0000ffe9.bin13151c8683cf4c686be5dc1d2c8e349323fb5684c57e696c42e6d044ee78b184 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE9 | 19000 bytes |
font_02_sfnt_off00013044.bindbae5d59fe48388d2bf5c5f0dffc09b491a471c71faf4d38a13132b8b3f8f3c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13044 | 10740 bytes |
font_03_sfnt_off000148c1.bin40badf1b290cbf856853f394c00d3a0af654cdd39e7a08023b7f861aa89f0f39 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148C1 | 17384 bytes |
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