MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm pointing to compromised websites. The PDF contains numerous links to external sites, many of which are hosted on disposable domains or appear to be part of a link farm strategy, suggesting an attempt to redirect users to malicious content. The presence of external URI heuristics and compromised CMS upload links further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://0985028898.kad.tw/kads/ckfinder/userfiles/files/lurazuzowizasaxulinu.pdf
- https://sibois.eu/userfiles/file/26409399894.pdf
- http://brava-ekb.ru/userfiles/file/fitubederawun.pdf
- http://radis-rrl.ru/userfiles/image/mepekupositukajogagofuse.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161414ceca72be---98258248565.pdf
- http://kasaitogo.com/uploads/files/55846088756.pdf
- https://fengshan-zhennangong.org/upload/ckfinder/files/28689195189.pdf
- https://ardiinerkh.mn/uploads/userfiles/files/98244943002.pdf
- https://atputasbaze.lv/images/userfiles/files/10974945662.pdf
- http://jingmingtai.com/filespath/files/20210912211929.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139a393d3711---37872465133.pdf
- http://littlepearlbooks.in/data/eimages/file/ziweloferuputun.pdf
- http://basketaci.cz/UserFiles/File/fexadewu.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16141ca4c217dc---puxogupaxidejirufafedi.pdf
- http://fotofolliasanlazzaro.it/userfiles/files/sugup.pdf
- https://shopexpert.com/app/webroot/files/userfiles/files/kopoki.pdf
- https://evergreencans.com/userfiles/file/12364859977.pdf
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/otlgbo0gsqmu4s42rcbipr8lk7/dalemebezixanakevudoweto.pdf
- http://go-pxl.com/uploads/files/48541346545.pdf
- http://amongelite.com/ci/userfiles/files/89150028706.pdf
- http://dogalakustik.com/depo/sayfaresim/file/95698621936.pdf
- https://pjkconstruction.ca/images/file/55963011398.pdf
- http://pawsandtiaras.com/ckfinder/userfiles/files/50316729094.pdf
- http://proclima-membranes.ru/userfiles/file/ropuzurogidu.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=yukari+persona+3+dancing
- 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_off0000e883.binbf5774befe0794b6275bea60366d83b686208110ccc224f69e939d727df7ade7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE883 | 20836 bytes |
font_01_sfnt_off00011f29.bind01d5ac4bd411e794e92ec1e81c3b67e6c95aa939e2d27c9259555c3cf053ab3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F29 | 10892 bytes |
font_02_sfnt_off00013848.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13848 | 16792 bytes |
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