MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The file also contains a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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://chcial.ru/uplcv?utm_term=gimp+android+alternative
- http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16131af2c52045---fepovi.pdf
- http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/numimo.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/f16d8f38da883a8c2c8d1cdf19409704/pikijavuletiwuvamus.pdf
- https://am-system.eu/ckfinder/userfiles/files/87616514402.pdf
- http://derp74.fooden.com/UserFiles/files/rizagopuke.pdf
- http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/eab62489eb51ac853cda9963ada008a3/diroluxiluruzu.pdf
- http://kemmurad.com/webroot/img/files/91141549146.pdf
- http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/161481644314dc---jobuzajenad.pdf
- http://tomei4x4.jp/js/upload/files/xeleg.pdf
- http://zopos.zohukum.com/ckfinder/userfiles/files/99228295210.pdf
- https://kozmetikadunakeszi.hu/userfiles/file/85438763367.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400feb37219---10758197305.pdf
- http://honyi.tw/ckfinder/userfiles/file/pasewusilabajemikijomezu.pdf
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161399203d2fb2---69837347428.pdf
- https://bepxuyenviet.com/upload/files/bixufumepaleberijifuxuwas.pdf
- http://neoneofitou.com/ckfinder/userfiles/files/zemoba.pdf
- http://jgbt.us/pds/userfiles/files/dezezuzukokidap.pdf
- http://www.prodomasa.com/ckfinder/userfiles/files/23456440469.pdf
- http://magicfood-cn.com/files/20210916015755.pdf
- https://lmbri.com/WYSIWYGImage/file/50484108164.pdf
- https://www.funes.gob.ar/ckfinder/userfiles/files/lipagorexobunofo.pdf
- https://tylbm.com/Upload/ckeditor/files/vimarixarotog.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_off0000eb2d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB2D | 16792 bytes |
font_01_sfnt_off00010344.bin877d8b34ca8d0f49fe24244cc1961306ac5b9f7e1219a458c64695068436bee9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10344 | 10488 bytes |
font_02_sfnt_off00011b03.bince2661d33c619a485c08816b957b68c994d23319222d0ce546f7d4f7a2ad3f31 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B03 | 17844 bytes |
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