MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites and disposable hosting. These links likely serve as a link farm to redirect users to malicious content, as indicated by the PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9849
Heuristics 7
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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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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://zrdb-drogbud.pl/Upload/file/wegipavuvibumoj.pdf
- http://dastone.ru/userfiles/file/37225804515.pdf
- http://partnerplus30.ru/images/fornews/files/kopenowasenawopakuzodibaf.pdf
- http://potentialdesign.cn/userfiles/file/1630721438.pdf
- http://gourmethousemacau.com/UploadFilesfile///57498846250.pdf
- http://etyekilovarda.hu/userfiles/file/rudoni.pdf
- http://amsuatrust.org/survey/userfiles/files/savopemuzibosaxip.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/hm8553b2j05nrhihmho18is0i8/xedodixigunitare.pdf
- http://tabbanbros.com/admin/fckeditor/editor/filemanager/connectors/upload/file/75143226031.pdf
- http://msinziniering.com/userfiles/file/15923378889.pdf
- http://abimobiliare.pl/pliki/File/lapejukagunusi.pdf
- http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/nutexob.pdf
- http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/guzizezisugi.pdf
- http://3colorjazz.com/fckeditor/userfiles/image/38813833212.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161474a6fb2d0a---badelalidezazilubazo.pdf
- https://phucatgarment.com.vn/ckfinder/userfiles/files/gubewiruwomeli.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/16134f98f8b95d---visisowigigaz.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/150a93fcfd40a2b9202e938e97f4addf/butesogubejomegixude.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16149e87a210cf---resudawa.pdf
- http://szyldkj.com/luodan/images/userfiles/file/fopevo.pdf
- http://depcip.com/app/views/panel/ckfinder/userfiles/files/pavuneripu.pdf
- http://villahetzwartepaard.nl/survey/userfiles/files/40854201404.pdf
- http://gibisch.info/files/files/94883248728.pdf
- http://nicenpos.com/userData/board/file/gozumezavu.pdf
- http://www.culturehousesun.org/photos/file/zidefutizote.pdf
- http://robertwestlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/82360239343.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=disney+infinity+apk
- 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_off0000b1b8.binc750bcafef1e3aab78625d0e2bffe8be4e28e5a37243870d20ba6085ee67ecae |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1B8 | 10292 bytes |
font_01_sfnt_off0000c91d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC91D | 16792 bytes |
font_02_sfnt_off0000e12f.bin6ad8fdca40194171f235578df97ab25de74014801696e915b65a0fac55ffd27c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE12F | 15816 bytes |
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