MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://ulleungroadtour.com/FileData/ckfinder/files/20210912_A3790CA83A57F82B.pdf
- http://moretonassets.net/userfiles/tisikopex.pdf
- http://worldsocialistpartyindia.org/ckfinder/userfiles/files/94774140840.pdf
- http://zopos.zohukum.com/ckfinder/userfiles/files/83455924842.pdf
- https://www.sensiblemachines.com/ckfinder/core/connector/php/files/79263657694.pdf
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/a650ff433d3c840c3d0c9700652c7d58/25883451936.pdf
- http://car-zone.sk/data/data/file/49915964650.pdf
- http://pileshoppen.dk/userfiles/file/28679853250.pdf
- http://kondicionery-fryazino.ru/upload_picture/file/kapalumuzinazodabid.pdf
- http://shrlie.com/upload_fck/file/2021-9-4/20210904163019694853.pdf
- https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/zikuxikunisijofuv.pdf
- http://colorsoftexas.com/ckfinder/userfiles/uploads/97994778968.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f8e8b990db---wezemigomab.pdf
- https://kar360.com/resimler/files/taxusub.pdf
- https://pbchistoryonline.org/uploads/file/6015966888.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161466797ad639---97015424625.pdf
- http://cavusofis.com/images_upload/files/bomezixanipalep.pdf
- https://invision.buzyhub.com/files/meterurafosopigelir.pdf
- http://hurtmar.pl/Upload/file/suketopakajikori.pdf
- http://fatamorgana.fr/uploads/assets/file/38662862727.pdf
- https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16134dd1ec67d8---17963585251.pdf
- http://librojuridico.com/aym_images/files/71839967660.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=android+system+repair+apk
- 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_off0000df1f.bin496dcb48a3bdf6213045cf1e6e3b5b05c78b0c8640c3f2ac928083c271dba436 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF1F | 18288 bytes |
font_01_sfnt_off00010eba.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EBA | 16792 bytes |
font_02_sfnt_off000126d1.bin62eb1d30d866b13b1f2ac3dd40057ffa3aa36d7fb4df2ef6812940935d7cdbc4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126D1 | 10696 bytes |
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