MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute phishing or malware. The presence of embedded URLs and the nature of the heuristics strongly indicate an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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://synerhu.ru/uplcv?utm_term=cramping+2+days+after+ovulation
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b11df6e75bd---98606418614.pdf
- http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/8dn0oeqka92fbg89b6imv14b10/8548533437.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16072e1891e8a7---pawowa.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c803f06ecd---1077823466.pdf
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/62a66cf54b51c06fc04f0201a82cb788/xowiwafotuw.pdf
- https://hashtag.school/userfiles/file/61818507454.pdf
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3790aa43ad---taribidawatejimesanozemu.pdf
- http://skybuildinfraprojects.com/uploads/fiwodezajufepuvufisew.pdf
- http://chongthamnguoc.vn/img/files/80656982118.pdf
- http://france-ex.com/images/blog//file/texojilokikubojopogofad.pdf
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6deb7d44d2---nenefirufotulojuvanaseko.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/bim064ol928tcf5s81g8pv073b/9678568026.pdf
- https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160bb9fe69fec4---9001107933.pdf
- http://zartmobilia.com/userfiles/file/20210603062603.pdf
- http://sharise.net/Uploadfiles/files/43143934679.pdf
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076584f0ae65---xalupavirodewab.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077429fa35cd---25091233443.pdf
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608da67bc1394---powirivaxanomovejaze.pdf
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/3f421c70e66da3d64005e1ac9f2f50ef/nizunisaxedirowefawo.pdf
- http://luxmeterthai.com/ckfinder/userfiles/files/nefaxewawunovopudilirob.pdf
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/90154d92364b6ec9c1f53eb23fba3911/nimunotozafujubajuvuro.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160971b5bacbbc---63214063430.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_off0000f81b.bin74fae9a6153940fbd0813646d092df1d529d9f3e8dcd337acb72bda33bf8876f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF81B | 16852 bytes |
font_01_sfnt_off000123fc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123FC | 16792 bytes |
font_02_sfnt_off00013c13.bin1d2f2521b175bdb4db00b2b5b11aa4e34dc2ced17fc98d0d96d510d869ee96f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C13 | 11272 bytes |
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