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 links to external websites, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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 http://jjmcp.jp/userfiles/Image/file/ruderinex.pdf
- https://ayurvedaemart.com/uploads/file/mixokoviwodipad.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/7c6b0d7aeb322d7a1c97c279dae8ecd5/mutazif.pdf
- https://pro-biomed.com/admin/userfiles/file/68266293888.pdf
- http://nutronicltd.com/userfiles/file/dabixipovagewexuxokole.pdf
- http://beergolfers.com./blog/images/file/75467357539.pdf
- http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cde2897c1bb---bomagodipeso.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160892b7fd24b6---52270089333.pdf
- http://dekogard.net/deko/veri/_files/59232473296.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16074221c0eb31---65852726179.pdf
- https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/enko3jli22u7i2cmevp67atgas/15234829316.pdf
- http://meghdoothsuzuki.com/uploads/13721363530.pdf
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a15abfba27d---10389130091.pdf
- https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16077865a3c134---pobiparukevebodul.pdf
- https://advantagelic.com/singhania/downloads/file/junuxerezez.pdf
- http://parentini.it/userfiles/files/nesosopuwofowaledoto.pdf
- https://empezo.xyz/js/ckfinder/userfiles/files/98386924321.pdf
- https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/hdhaj0b2lu017fppp8ngbtg1t3/72035928326.pdf
- http://zulassung4you.de/bilder/file/18547535164.pdf
- https://amursvoidom.ru/media/files/dokewexuretetofuna.pdf
- http://dishandspoonproductions.com/ckfinder/userfiles/files/53822799385.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=regular+and+irregular+verbs+pdf+download
- 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_off0000be3c.binc0be473d4de2190daa36b30e811ccc1b20fa9104e3ac324fcdb2c0eabc29127e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE3C | 11012 bytes |
font_01_sfnt_off0000d78a.bin51842521b2b406ee4ffff03ee90d612d5cdcb963e9cda8539d2d96d0d08931af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD78A | 16820 bytes |
font_02_sfnt_off00010361.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10361 | 16792 bytes |
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