MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for delivering malicious content. It also contains numerous external URIs pointing to compromised websites, including WordPress upload storage, suggesting a link farm designed to redirect users to malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://catamma.ru/uplcv?utm_term=vegetable+root+depth+chart+pdf
- https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abdf1755f0e---85038261563.pdf
- http://permanentnimakeup-brno.cz/userfiles/files/55795242071.pdf
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/c2ed2adbb53137d3919e863638f792c4/88783440666.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b4b86124d76---86617766779.pdf
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/070111284648.pdf
- http://olsztyntransportmedyczny.pl/userfiles/file/56473805999.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bc315e49642---daduginofuzumufuvu.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609901d2c1590---fiwenavobumitawenonaki.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c6ff0a75f---55577436145.pdf
- https://peptidturkiye.com/ckfinder/userfiles/files/20347349764.pdf
- http://standartbio.com/fckfiles/file/rukuvekavitapababoridofos.pdf
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/c2555d1b92d42ac502a0eb445fa0ff95/muserezerovik.pdf
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086437b5461a---tadolenedutizejawepos.pdf
- https://seitonsolutions.com/ci/files/53027389677.pdf
- http://arcadia6465.com/clients/f/fc/fcac8d81e62e7f23ed02b02243def538/File/pabon.pdf
- http://k-ookuma.com/js/upload/files/vixesuraw.pdf
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/7rjf96namqaldmqknk3og0m1h5/39795820586.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/b6c8dc19c49b5b16fde6fcb50e8558a2/84275779214.pdf
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/850e37a442712c8b60d5dcf4c948fa7a/55260186051.pdf
- http://carlaschroyen.com/content_docs/gipufome.pdf
- https://alajuusa.ee/media/contents/file/govaxipuguriful.pdf
- https://i3mit.com/shopadmin/upload/files/14089249164.pdf
- http://perfecturology.cafe24.com/upload/editor/imagefile/4523445244.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_off0000f62e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF62E | 16792 bytes |
font_01_sfnt_off00010e45.binccda8922ff50b5d82904800ddbccdc8c014f4af00b5d6997130de91f8f3a9793 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E45 | 10644 bytes |
font_02_sfnt_off00012659.bin1c70a87ef7333c86c022d6c41d01eee26cc12652db16f33b45636563678b48e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12659 | 17360 bytes |
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