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 exploiting PDF vulnerabilities or delivering malicious content. The PDF also contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious destinations. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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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://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/bfccd4d1e53f61c20b0d381dbf5b2578/sipiw.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d07748d90---kufivebiker.pdf
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/3c960645e8f825fef6a2b5dd13c7043b/50497319828.pdf
- http://elijasprojekts.lv/files/file/zexanimimenifibevi.pdf
- http://alexandersorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/8639353545.pdf
- http://alibabashipping.com/userfiles/file/wowijexoteru.pdf
- http://ubestsports.com/imager/files/20210626024239.pdf
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160981fbb6bc9d---17016963934.pdf
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/f20e0mos8trer1ff85gevoevp2/vixagirojorevu.pdf
- http://gorisum.net/fckeditor/upload_file/file/10755835926.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607544936b0b8---71996350483.pdf
- http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160ba293d80b1c---48649803767.pdf
- https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/cb60090b1c9d36aa96479d41e85d5030/17031439921.pdf
- http://mywayrtk.info/userfiles/file/83925611464.pdf
- https://bechtoldpaving.com/wp-content/plugins/super-forms/uploads/php/files/7b8073a56491048b95b9dcde28dc55ab/jisarukisasufakovozax.pdf
- http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202106190716369688.pdf
- http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609feadb2f5ab---86362332712.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160900475d8201---70302903285.pdf
- http://mackyz7automotive.com/js/upload/files/8163740303.pdf
- http://antifftech.com/uploadfile/file///2021051203340834.pdf
- http://leaguengn.com/userfiles/file///58689452078.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=play+candyland+board+game+online
- 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_off0000d4d0.bin3ea5768e2d25c24e7f831e28c7c212003dbdd1bf3b34e0fe86e74ba11ebafb3b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4D0 | 16948 bytes |
font_01_sfnt_off000100ed.binc0cb520993691ae49b1e63d60df06af361303e289776a77458dafae460bc1ef9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100ED | 10704 bytes |
font_02_sfnt_off00011943.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11943 | 16792 bytes |
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