MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous external URIs and embedded links that point to compromised WordPress upload storage and other disposable hosting, suggesting a link farm designed to redirect users to malicious sites. No scripts were extracted, but the presence of numerous links and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://philabc.ru/uplcv?utm_term=mortal+kombat+2021+full+hd
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/1af33ccd569f54f962984d4aff9f371e/47029730264.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/fjnhkf5cm9mptqnmamatqfql8m/laveg.pdf
- http://meruzhankhachatryan.com/app/webroot/files/file/57319074432.pdf
- https://phuketwebstudio.com/ckfinder/userfiles/files/mefanamoxa.pdf
- http://asea-admin.com/_userfiles/file/20210915212200.pdf
- https://graveyards-fuj.ae/userfiles/files/kozudidubuzikamegowibub.pdf
- http://oppedisanorobertosrl.com/userfiles/files/94495848478.pdf
- http://vxclouds.com/userfiles/file/mivebaxetowolekak.pdf
- https://nichecnk.leaddeehub.com/userfiles/files/98458442738.pdf
- http://dmhu.eu/uploads/uplib/file/toviriregaxim.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16150dd6c86639---bewikufolode.pdf
- http://www.letnifestiwal.pl/ckfinder/userfiles/files/2332939603.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/b82821d8a1f73ffbae041ae41b8ce888/72683021419.pdf
- https://www.assofmt.org/ckfinder/userfiles/files/35335373453.pdf
- https://lazerom.pro/media/file/71670609899.pdf
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/8i33271fk3c3kbe8nm7m294kal/47553448708.pdf
- http://aihyang.com/userfiles/file/selorovujapudoniz.pdf
- https://we-plus.tw/ckfinder/userfiles/files/gopanugevedomakax.pdf
- http://elverum-revmatiker.no/images/file/wosobolakeg.pdf
- http://autoskola-weiss.cz/userfiles/12019074961.pdf
- http://borisovhlebprom.by/var/upload/file/wijosuxituvajukitaw.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615135ec6c05d---rajejugobosojamalurenega.pdf
- http://morecoredesign.com/images/imageUps/files/89320910970.pdf
- http://deleeuwputten.nl/site/data/ws/files/lirizipexotijunikafej.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_off0000b25d.bin835f74d922013eda10bb280cf5c130af164febcb01ebd70882cf3f88630dfe4f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB25D | 18256 bytes |
font_01_sfnt_off0000e0c1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0C1 | 16792 bytes |
font_02_sfnt_off0000f8d8.bin42ee3d3039f828cb3e3e616f636e62be7f9e9842f059b929aa1be10525fcbdc4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8D8 | 10744 bytes |
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