MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript, which is often used to redirect users to malicious sites or download further payloads. Several heuristics indicate the PDF is part of a link farm hosted on compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c667f19c4b---puvevebised.pdf
- http://wdnederland.nl/file/disetidetebiponix.pdf
- http://mundori.com/js/ckfinder/userfiles/files/46542569895.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/kaapsqu8uqm6e322pl6lk01pi5/pemokopisarapenotukudu.pdf
- https://www.htlexpress.com/ckfinder/userfiles/files/68826294555.pdf
- http://wowbond.com/upload/Fckeditor/file/tajedifi.pdf
- http://assessmentinsight.com/ckfinder/userfiles/files/82919647025.pdf
- http://dailygiasi.com/uploads/userfiles/file/56339278878.pdf
- http://quangcaosms.org/media/ftp/file/jeburomeririjavimejavife.pdf
- https://kettosallampolgarsag.net/imagini_ws/pugonujunusuwokixaxoxi.pdf
- http://torgoborud.org/images/file/dikirugupaxadavunejuxipop.pdf
- https://smwebtechnology.com/arishayurveda.com/userfiles/file/79590320915.pdf
- http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/wasopuzivolitamowezakubi.pdf
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/082046c841bc6449bf8c54161468328b/wimazot.pdf
- https://semangkabiji.com/contents/files/gutod.pdf
- http://quocteanviet.com/img-chamthi/files/xumexujodefemozu.pdf
- http://chongqinghaohong.com/upload/files/39382297393.pdf
- http://qianlong99.org/ckfinder/userfiles/files/28934006814.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb81d65851---kubewajukuw.pdf
- https://numen-wow.com/userfiles/cloud/files/lanesinafuzugobopa.pdf
- http://hoadondientu-ptp.vn/images/ckeditor/files/pobin.pdf
- http://ainut.fi/userfiles/file/84865482367.pdf
- https://fullgame.hu/uploads/files/51831092469.pdf
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/82a37c783d458dba8896eab92946a20f/67787726576.pdf
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/40ccaaf0176a8f2483dc8bc9d37af2be/36869697895.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/6f139a67c9ec1bc13c7b8e4d021c799d/botatetaxibenizo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=entre+nous+2+pdf+free
- 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_off0000ca42.bin5a8f7f3ea094397397b3700be0e0ee78651dc81f0a4e61c89685e3f2767e211e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA42 | 10396 bytes |
font_01_sfnt_off0000e1f7.bin2672a4249098e2c44552963764839df2a62b1a1814704c397ff8b109f524a1c4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1F7 | 19040 bytes |
font_02_sfnt_off0001127e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1127E | 16792 bytes |
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