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 ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Several heuristics identified the PDF as a link farm pointing to compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are likely part of this lure, aiming to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://csc-027.com/userfiles/file/20210927092557_uh8xzl.pdf
- http://donghobaoan.com/uploads/files/kesuginutisilelul.pdf
- https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/todisikarukazoj.pdf
- http://antoniolescio.net/userfiles/files/bamalip.pdf
- http://yipdeals.com/app/webroot/upload/files/danirujodijevak.pdf
- http://zensushidanapoint.com/uploads/files/terafemos.pdf
- http://studiogaleazzo.eu/userfiles/files/48322600251.pdf
- http://fisioterapiasuzzara.it/userfiles/files/xuvafovuzotevelanulexuti.pdf
- https://sunkamalzemecilik.com/userfiles/file/73562810827.pdf
- https://adasms.fr/userfiles/file/8628428665.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/mifuvodapeke.pdf
- http://kietminhrivet.com/upload/files/jetukemiwododewapinomedo.pdf
- https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150cf2508c26---51539460911.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136ce8e0d711---62783471481.pdf
- http://sanarina-coaching.de/ckfinder/userfiles/files/ravulexogekipu.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb06eea3c4---xukukoniw.pdf
- https://produse-zilan.ro/files/nesaliropuso.pdf
- https://jeevandeepspecialcare.com/ckeditor/ckfinder/userfiles/files/masunagofivu.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/4a03086888b2a9ff20aabfc533127b68/26459209399.pdf
- http://tnmetalworks.com/images/files/tagiwirenomudijexirinesex.pdf
- http://sbkf.org/files/files/3525965192.pdf
- http://inteko-tula.ru/f/file/mubujodifewuxuwotolum.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=simple+rubrics+for+video+presentation
- 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_off0000af36.bin639ce6137733bf4ab58d7888dd7711d24dcaa1873a8294311bbdeabbe44a1792 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF36 | 11164 bytes |
font_01_sfnt_off0000c909.bin2251c5a7a40777fbbb11d10188a66d9c90f123668fc2ec0e80486c39d01e4191 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC909 | 16288 bytes |
font_02_sfnt_off0000f276.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF276 | 16792 bytes |
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