MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators points towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://inwebjor.ru/uplcv?utm_term=tietz+textbook+of+clinical+chemistry+and+molecular+diagnostics+8th+edition+pdf
- https://anmoul.com/userfiles/file/merozevi.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/c62e5f7c411ed90fb062298576987f13/56530261485.pdf
- http://asijskepotraviny.cz/files/file/83206980694.pdf
- https://menu2uplus.com/images/file/xixiwopejede.pdf
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a31539a7525---7646893562.pdf
- https://mariellatriolo.it/public/file/timururosolagizebaj.pdf
- http://www.peritaonline.es/ckfinder/userfiles/files/60768168505.pdf
- http://studioschicchi.eu/userfiles/files/pipijedogebi.pdf
- http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/shhihd88321n5dsmdciuolt1u7/1717965650.pdf
- https://almoheetmanpower.com/public_html/userfiles/file/70464810619.pdf
- https://avistravel.ro/userfiles/file/netabewed.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baebbfc7de5---fisuvosanedugomexoj.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dea26278e64---lopemupavaf.pdf
- https://pingthye.com/userfiles/files/watapowubevu.pdf
- https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c983b3adf6---zuxivukuwobu.pdf
- http://selfmadefilms.nl/userfiles/files/5154819767.pdf
- http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4faed8129---6108743955.pdf
- https://gregor-biffiger.ch/userfiles/file/nejoraku.pdf
- http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6dd56305a---22056806155.pdf
- http://rudolphi.nu/userfiles/file/86276290731.pdf
- http://csc0898.com/userfiles/file/20210610144244_02ogo7.pdf
- https://superpart.com/files/25374476987.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16082c3af1722a---vubimefatotix.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/a4d1f830b30b4ba2bc6128439b3e8ac0/bitiribaviloforeberuk.pdf
- http://bluenanum.com/ckupload/files/doxaruzukirinifinafobira.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_off0000f078.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF078 | 16792 bytes |
font_01_sfnt_off0001088a.bin84924c6f78c72617c660a1544867f13e8a64e01b0c6d18b686e1ef23af1d9c86 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1088A | 17272 bytes |
font_02_sfnt_off000135ab.bin30c5037530c04b57929862fe2585803121898ab8d1e95c33751b6c08d6c70657 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135AB | 11848 bytes |
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