MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution campaign. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm on disposable hosting, and the PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic points to links hosted on compromised WordPress installations. The presence of these indicators strongly suggests a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://krisoc.ru/uplcv?utm_term=i+wanna+be+a+millionaire+song
- https://sahodayabbsr.com/test/fckeditor/file/fixozoda.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7fa34231e---66087183987.pdf
- https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16088e11d13e02---kogituwirawokajidele.pdf
- http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/lodaguxiwoxarexu.pdf
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/fb1ff06672f59bc0e470ff85b549ca32/xedemukijarototeveg.pdf
- http://kapelski.pl/userfiles/file/katuropuzijirubepuxonat.pdf
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd3e2cee21---94275720478.pdf
- https://naoshima-habitant.com/raguwinujodixujivegaroxu.pdf
- https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/3c945cfbd3f4978d780b6a7bceff6762/logemola.pdf
- https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/ijddks3ab81f8veopis20505q2/ritami.pdf
- https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/06b53ea5a4e9e82631ba9738005c3e56/90182318304.pdf
- http://baigeleather.com/userfiles/file/kenenubirirovimego.pdf
- https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/160777b547bc6f---bunewoxulekabemolepugaf.pdf
- https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/bbf7ff137015d90b977a88a37d5512d9/38061521134.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac27dadf7f8---muripuzuw.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/btnva1mc8qeo6ccn84me7cij8r/65464906206.pdf
- https://banghenails.com/upload/file/sizugonovewudaxave.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868260e9a20---25989002527.pdf
- http://poorclarescork.ie/images/66636111097.pdf
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b515e668c---32084150154.pdf
- http://sonkertrail.org/clients/9/92/9260a3c387aed4615f72c72c3a1da295/File/gejopalogidujimifokolugo.pdf
- http://kapli74.ru/upload_picture/49699139314.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_off0000fdd5.binbd51107172f7a407ffc522a4fae9cad3a89256c801a61d4796d6b3d7b054ea84 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD5 | 17520 bytes |
font_01_sfnt_off00012ba0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BA0 | 16792 bytes |
font_02_sfnt_off000143b7.bin715017d68ebfc48bf3f9beb85c76f5552750fd31aca364468f86760273552df5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143B7 | 10528 bytes |
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