MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm or redirection mechanism to malicious content. The presence of external URIs and link farms indicates an attempt to direct the user to potentially harmful external resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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=gramsci+southern+question
- http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607899e9b2f04---56830903807.pdf
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/f2u8r97mopb0kcolbii0dfln8q/rukubisuwuwamoki.pdf
- http://euro-ex.com/images/blog//file/kusetisodegijigofuxefalo.pdf
- http://linkingpeople.info/userfiles/file/nonefuzupalewemalaxavufot.pdf
- http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/k2qrboiq38ur22avh6ths4hap1/kuwid.pdf
- https://juegosinflablesarizona.com/files/97746130016.pdf
- http://forglass.sk/userfiles/file/lileg.pdf
- https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a86f755f97---18085078219.pdf
- http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086e2249947a---65704615550.pdf
- https://doxity.ro/ckfinder/userfiles/files/25571438864.pdf
- https://dimensioninteractive.com/WYSIWYGImage/file/14006396296.pdf
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/33641af55ad81248d8bf663cd9d1affa/rusogirosub.pdf
- http://anhuifan.com/upload_fck/file/2021-4-28/20210428204422753164.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/c92laj2sn8g0sj6s365ngl5uc2/88828990775.pdf
- https://dacinsara.ro/fckfiles/file/sabufagawovokafon.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfe7d0fc03---ribakokinid.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/99a55e2f6fcfdb8b3f0ebf0c8955b3f5/32713799260.pdf
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/ilqllo7k5liurv910o5o07e30c/5361004482.pdf
- https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/4062c8f5c44c52a61cbb302019f81555/disujajuzutixoxevifezebiv.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c534fbd9e48---80615680212.pdf
- https://preprodpcb.com/userfiles/files/gubizufivilafefutoremedi.pdf
- http://hanhthien.net/uploads/file/38342525173.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_off000184f1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x184F1 | 16792 bytes |
font_01_sfnt_off00019d03.bin246daae8b686a62357b9ec33c545f0232de432b19d78f040d661c82af7863864 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19D03 | 17380 bytes |
font_02_sfnt_off0001c9fe.bin662bcfcf6b43d80873d2125b822d4694bb8669ff0d7c98b061c84f66614407e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C9FE | 10736 bytes |
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