MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting it functions as a link farm to distribute malicious content. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure, but the overall structure and URL analysis strongly suggest a malicious intent to redirect users to harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9896
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://tnmkor.com/FileData/ckfinder/files/20210913_6A8C6F4B5B267C5C.pdf In PDF document text
- https://beta.nhatthiengroup.com/files/uploaded/files/668546162.pdfIn PDF document text
- http://tucholainfo.pl/userfiles/file/sunilonijukige.pdfIn PDF document text
- http://indago-rovigo.it/userfiles/files/77473277971.pdfIn PDF document text
- https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/43145969359.pdfIn PDF document text
- http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/161399992bb554---14985844539.pdfIn PDF document text
- http://newshop.jp/archive/file/xuvadiniwunomokawovakavu.pdfIn PDF document text
- http://kerama.altrodesign.eu/ckfinder/userfiles/files/42070361481.pdfIn PDF document text
- http://kaiyudachem.com/filespath/files/20210907070855.pdfIn PDF document text
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/161377947e388b---92917863911.pdfIn PDF document text
- http://gabinetpro.gabinetpro.pl/kosmetyczka/krakow/files/weratapuvapipeb.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16131ada4b9ff4---1494373753.pdfIn PDF document text
- http://restaurant-lyons.fr/userfiles/file/35515354482.pdfIn PDF document text
- http://mamnonkitty.com/webroot/img/posts/files/99923672594.pdfIn PDF document text
- http://tomaszfilipczak.pl/userfiles/file/girujikaxusonelilumenid.pdfIn PDF document text
- https://vnsteeldetailing.com/UserFiles/files/gopibebalesarosafin.pdfIn PDF document text
- http://fmmvn.net/userfiles/files/82253924183.pdfIn PDF document text
- http://revize-elektro.info/UserFiles/File/lijijesanijer.pdfIn PDF document text
- https://samirkumarpaul.com/ckfinder/userfiles/files/zamogatenenubarawumet.pdfIn PDF document text
- https://profix.fr/ckfinder/userfiles/files/54078921173.pdfIn PDF document text
- https://www.spitalmoldovanoua.ro/ckfinder/userfiles/files/88003577574.pdfIn PDF document text
- https://threadworx.com/thread/admin/uploads/file/xanulajilidivijugil.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=every+skin+fortnitePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5DA | 19404 bytes |
SHA-256: ea0f8b2c8e63cc65b0ff5176b290dfa3a75212503ade910ccb2e7a682244afe3 |
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font_01_sfnt_off000128e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128E5 | 10256 bytes |
SHA-256: 1ad479700829c514e2bd08c403b7573fa4803b6e08aebb7ab46cf0eed8f05807 |
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font_02_sfnt_off00014021.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14021 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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