MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, and the document body was unreadable binary data.
Machine Learning
- Nyx PDF Classifier malicious score 0.9765
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 http://assessmentinsight.com/ckfinder/userfiles/files/65893103752.pdf
- http://hasyo.net/files/file/21997052162.pdf
- http://humboldthighclassof79.com/clients/1/19/19f040aad945c40a0acbd79abd3dc6cb/File/57376990615.pdf
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16c8c8fcad---99582459367.pdf
- https://dgaspcsm.ro/ckfinder/userfiles/files/pedimo.pdf
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160960fbbf003b---91222827770.pdf
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082a8652eee1---jufur.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/d693b229e48be7da0a3b0e10abf5d8a3/61765286142.pdf
- https://nhachoxebus.com/upload/fck/file/nezaretubexexapofivanid.pdf
- http://guides2alpes.fr/uploads/file/76850319418.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/4cakh3tuik06fh1333aebvcoj3/7052511188.pdf
- http://czdashan.cn/uploadfile/file/2021061213441573499.pdf
- http://www.lugashotel.com/data/editorfile/73338164883.pdf
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b41de5a0e3c---vomoluwafusizomuko.pdf
- http://alhouti.com/userfiles/file/82203453245.pdf
- https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fb4b6496e---74024039640.pdf
- http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/67144062234.pdf
- https://catherinehourihan.art/wp-content/plugins/super-forms/uploads/php/files/619b0fe8d07c44729d000f7b4ce73fba/53110186897.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073e8e8a551b---2243895830.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160a349dc6f313---46115430573.pdf
- http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf641131f88---64794544473.pdf
- http://aisef.org/uploads/userfiles/file/file/devir.pdf
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/597dce10ca9e2b82af5a17d8d59e05df/xiforudofesiwamazib.pdf
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0702e4a87---68548973368.pdf
- https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4ac4ee782df4482c40f3434528bc3970/49161312817.pdf
- https://ridersshop.it/file/8941772107.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=file+explorer+on+xbox+one
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e52b.bin491578fbbf009aef19f4e907d1eb67fc8945b4f6b8ae8c8e014225102e79f61e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE52B | 10036 bytes |
font_01_sfnt_off0000fb35.bin5221cc56e96b657ff7c15f49bf1fbf1b5222e15cd7ffd769ce953162a3e53832 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB35 | 2064 bytes |
font_02_sfnt_off00010470.binc2b0d2ccfcf6c88ccc127deff359675cf3f6c6b343b38548ab52f660f575d21d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10470 | 20716 bytes |
font_03_sfnt_off0001377a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1377A | 16792 bytes |
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