MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, forming a link farm. The primary function appears to be redirecting users to potentially malicious or phishing content hosted on these compromised or disposable domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://huntic.ru/uplcv?utm_term=tagalog+words+starting+with+c
- https://castilloexterior.net/ckfinder/userfiles/files/83039680903.pdf
- http://pololanna.com/user_img/files/luxedajedifi.pdf
- http://kaitianjinghua.cn/admin/userfiles/file/202109051449131298.pdf
- https://pmsp-me.com/userfiles/files/jemeguvigefaluzu.pdf
- http://cuuhoatudong.com/upload/files/jovilatekesudumetot.pdf
- http://circuitvietnamcambodge.com/hinhanh/file/godosawov.pdf
- http://hotelclinton.it/userfiles/files/logekapolab.pdf
- https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/161467d3d7723b---sadizenofivovemigoni.pdf
- http://konakelektrik.com/userfiles/file/ponosas.pdf
- https://rubin2000-distribuitorshop.ro/userfiles/file/14929179599.pdf
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1614251ff0dfa1---welovoruburexigebekonum.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161411c5754d41---96241537769.pdf
- http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/f3733818476b0ac373820343a104d1fe/nexedekijugodudagogado.pdf
- http://mis.nrru.ac.th/gradjournal/ckfinder/userfiles/files/tubexinovekuxigikilatu.pdf
- http://bctlorraine.org/userfiles/file/5156012162.pdf
- http://www.thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/fagubisalan.pdf
- http://coytex.net/ckfinder/userfiles/files/pezema.pdf
- http://globomax.eu/userfiles/file/95533712897.pdf
- https://baoyi-chuck.com/ckfinder/userfiles/files/37127938635.pdf
- http://www.ntweac.edu.hk/admin/ckfinder/userfiles/files/sivatuxosexizafitixefobi.pdf
- https://cristalparkhotel.com.ve/ckfinder/userfiles/files/rarupov.pdf
- http://tano-cable.com/d/files/zekoganenimolasadobajup.pdf
- http://xn--80aer5aza.xn--c1acndkmcarx.xn--p1ai/ckfinder/userfiles/files/65383621851.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_off0000b273.bin2622bfdac17154a361ef095580b7322b96414b555bec445384e582321477150d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB273 | 14112 bytes |
font_01_sfnt_off0000d570.bin4726431336f18cd5d3e9687b9a94b19316a1ef04e29c66773a5ac3b574cb9bdf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD570 | 10568 bytes |
font_02_sfnt_off0000ed53.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED53 | 16792 bytes |
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