MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML_NYX_PDF_MALICIOUS heuristic and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://www.aicsmindia.org/ckfinder/userfiles/files/zebogamigulipaza.pdf
- http://letresorellebio.it/userfiles/files/norirosorutumivudewa.pdf
- http://studiorinaldibedin.eu/userfiles/files/11989104883.pdf
- http://musikpark-live.de/userfiles/file/36857262316.pdf
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613112eeaf186---roruz.pdf
- http://www.sosonomo.com/ckfinder/userfiles/files/84407237008.pdf
- http://www.tobywells.org/media/fckdir/file/zonupukozabawerijenub.pdf
- http://studiomontironi.eu/userfiles/files/pijagizebafodetunab.pdf
- https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/4571714017.pdf
- https://plasy.com/uploads/file/pipaz.pdf
- https://pasarangroup2.com/contents/files/15632823083.pdf
- http://taiwan-tsai.com/upload/files/4325831732.pdf
- https://martan.es/cenavarra_userfiles/files/41426502483.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/t89imutor5tkro0m30nenmfd26/56646312248.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140be8c6f520---64629821268.pdf
- http://0225674989.kad.tw/kads/ckfinder/userfiles/files/lojuja.pdf
- https://mihalex.by/files/files/32850388611.pdf
- https://testpensija.bankai.lv/ckfinder/userfiles/files/texag.pdf
- http://auksozvynas.lt/userfiles/file/30085360156.pdf
- http://tauben-buchmeier.de/kleinberliner-schuetzen/userfiles/files/37911772418.pdf
- https://nutstudio.it/userfiles/file/zaluxofofeteteritizegedu.pdf
- http://ke-sen.com/userfiles/file/1631555123.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=outlook+mobile+signature+same+as+desktop+android
- 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_off0000d9fb.bindfecd314123814568d17a156c27e294ee8f5bca69067fee211020cf2e97d49d4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9FB | 11092 bytes |
font_01_sfnt_off0000f364.bina090baa6e70e97a0a1b224ef67445411b9f9b9704837f1dc592727f0266caecd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF364 | 18364 bytes |
font_02_sfnt_off0001229a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1229A | 16792 bytes |
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