MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to numerous external URLs, some hosted on compromised WordPress sites. The presence of multiple external URIs and the ML/ClamAV detections strongly suggest an intent to lure users to malicious sites for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://medvor.ru/uplcv?utm_term=how+to+turn+off+mms+on+android
- https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/mixulaj.pdf
- https://adesso-moosburg.de/images/file/58671545889.pdf
- https://vleek.com/uploads/files/voxutu.pdf
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137c0df8183f---xawezalizugad.pdf
- https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/bedutikadilunesik.pdf
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a1baf5fcf6---86108339049.pdf
- https://ls-machinery.com/uploadpic/files/202109180019524497.pdf
- http://sinners-party.de/media/file/pogixego.pdf
- http://tns-china.cn/editor_upload_image/file/zuvakos.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16133fa5615d46---dopavanikovezan.pdf
- http://www.zdravotechnika.com/ckfinder/userfiles/files/59145499988.pdf
- http://adhunikjewellers.com/ckfinder/userfiles/files/jekumo.pdf
- http://www.verneteco.com/ckfinder/userfiles/files/fikimenujefifuwolida.pdf
- https://instalacje-elektryczne.net/ckfinder/userfiles/files/kutekuzutofefupogelope.pdf
- https://thietbigas.net/media/files/buxelojewegax.pdf
- http://graciaindoutama.com/kingkong/userfiles/files/84702375754.pdf
- http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/42304955616.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161390ecb9dec6---62489715231.pdf
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/6e9045638f9b6bf06f07173903ac4bbb/mexelofawokusiloderixejiw.pdf
- http://celyroknaterase.sk/editor_uploads/system/files/sitokoregozoperusoked.pdf
- https://bokaichenyu.com/upload/files/30253030642.pdf
- http://indago-rovigo.it/userfiles/files/fizanelirobod.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d0f12ca3c6---ribilajavuzagupebagi.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_off0000e314.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE314 | 16792 bytes |
font_01_sfnt_off0000fb2b.binb903d8e13ed918f9e57033fb650bf0435fdf8f6590b93b71cf0e6dca369560ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB2B | 10512 bytes |
font_02_sfnt_off00011311.bin5ade74d785b59e57156cf7a58bffa6d068c2a8580c5ebedc013927ad935d8933 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11311 | 17560 bytes |
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