MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to numerous compromised WordPress sites, which in turn host malicious PDF files. This pattern is indicative of a phishing campaign or a distribution point for further malware. The ClamAV detection and ML classifier strongly support the malicious nature of this file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://crewmak.ru/uplcv?utm_term=the+mystery+of+the+spiteful+letters+pdf
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a761cb79bb7---6763463282.pdf
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6e7534f51---nenoleli.pdf
- http://kiszelyugyvediiroda.hu/docs/file/runopavofanibutawamesilo.pdf
- http://suapaiatuipelehakefamily.com/clients/80707/File/kakijikig.pdf
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afc6dab6815---84680827497.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/32a80cb95cf2430e4523d8ceb6d76a6e/xeneramotomobagewijoba.pdf
- http://cuatro-pr.org/sites/default/files/file/voxitatefubidakem.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a199ef5afcf---94974580736.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078f47d1fa08---39479613722.pdf
- http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/11c44b7c033c04f4c6ef8d0e59523b38/pusosa.pdf
- http://zoldjogsi.hu/uploads/files/65285990461.pdf
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607835e1e5f7b---kelimuzenitalados.pdf
- http://jarosi.hu/files/file/39901346071.pdf
- http://gostinica-domodedovo.ru/files/55594275881.pdf
- https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/a5e0374ebd14130e52d5ce02cfd8ebd3/42194953937.pdf
- http://edu-family72.ru/content/images/uploads/file/luxawesugitifufo.pdf
- http://hattingtoemrerogsnedker.dk/userfiles/file/vodewevimojopuvegu.pdf
- https://wineart.online/userfiles/file/8133229221.pdf
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b72847edd02---53619791400.pdf
- http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16087e710380ba---mopanisal.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d950e3c337---mowelavuxesipedurizur.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_off0000f6e6.bin2772eb3619bdf0c1c3dc8e4c2eabafd49e53cd5563ae33dc85119fba563d9ae4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6E6 | 10672 bytes |
font_01_sfnt_off00010f59.bin91a4f0e8bf31b538e7d9c614153759650bba8d27d66809a45801ff73272f823a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F59 | 17160 bytes |
font_02_sfnt_off00013bef.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BEF | 16792 bytes |
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