MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The document also features a large number of external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9888
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 https://synerhu.ru/uplcv?utm_term=movie+let+him+go
- https://marmetal.cevhertemizlik.com/userfiles/files/75349272353.pdf
- https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161410d6c0835a---72337504658.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161415efa266de---53319254245.pdf
- http://jongauger.com/ckfinder/userfiles/files/81197011766.pdf
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141231417ea3---94456206902.pdf
- https://betamachinery.sa/other_files/File/79032699832.pdf
- https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/kubupojajivamisogafotebo.pdf
- http://vandientuchinhhang.com/upload/files/95163150338.pdf
- https://www.koreayokogawa.com/ckfinder/userfiles/files/tetuwabavimazeza.pdf
- https://kp-bs.ru/upload/files/64495894642.pdf
- http://yousefmaktabi.com/ckfinder/userfiles/files/28991160014.pdf
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/00855af4631da5b789dc1a07fb4d7f8a/16535087294.pdf
- http://www.enfersalus.com/ckfinder/userfiles/files/98165975605.pdf
- https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/38970494772.pdf
- http://sergeisurzhin.ru/ckfinder/userfiles/files/femibuzesaxajisuru.pdf
- https://mariapolis.es/ckfinder/userfiles/files/37750605264.pdf
- http://allmedicus.com/userfiles/file/24416807580.pdf
- http://apartament-krokus.pl/userfiles/file/robowakinawux.pdf
- https://umiyawoodworks.com/fckdb/userfiles/file/49559582803.pdf
- http://photo-ostrov.com/ckfinder/userfiles/files/rugepopojogajiwukidele.pdf
- https://atamergranit.com/userfiles/file/nuzusovixozemunenudeviv.pdf
- http://scuderia512.com/js/upload/files/96745508099.pdf
- http://naturpix.ch/cmsimages/file/fovawo.pdf
- http://piqiso.ru/userfiles/file/sesazegi.pdf
- http://gtlitalia.com/userfiles/files/piperirigosuxijimukutir.pdf
- https://nbc.com.vn/ckfinder/userfiles/files/sadevokaxowu.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_off00010f8f.bin8994b8ec752ee6f1abc833802db0cc694fff69da95ae7d46a8882bac3d5ce290 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F8F | 17868 bytes |
font_01_sfnt_off00013dff.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DFF | 16792 bytes |
font_02_sfnt_off00015616.binb6401cb6fec35056b279459fc66dd418e1434570f10a663796611026b3199147 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15616 | 10080 bytes |
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