MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to distribute malicious content through search engine optimization. The embedded JavaScript likely facilitates the redirection to these malicious sites, potentially for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://crewmak.ru/uplcv?utm_term=unlock+it+book+pdf+free+download
- http://madinagirls.com/easydo%20v2.00/files/uploads/nibadejiforitok.pdf
- http://kpotplace.com/uploads/files/regodixowagalojobusigom.pdf
- http://www.tobywells.org/media/fckdir/file/53332410725.pdf
- http://www.tokyomagic.jp/images/library/File/86710520496.pdf
- https://siangyun.com/upfiles/editor/files/vuvugozumopifiponox.pdf
- http://jdjcnc.com/upfolder/e/files/20210913143545.pdf
- http://santabruna.cl/upload/file/30808847509.pdf
- https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/besonukuzifukeluja.pdf
- http://haohanlegend.com/Uploadfiles/files/40297315315.pdf
- https://umutisi.com/umut/upload/files/posazitimoxiwiroburewonod.pdf
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/3bbae99ccd6130aeedeeb99a23a582c4/88279264324.pdf
- http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/49886846435.pdf
- http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f88c049cf5---xinarofifome.pdf
- http://aviapartner.biz/js/ckfinder/userfiles/files/42645606939.pdf
- http://wellogo.in/userfiles/file///21432268908.pdf
- https://namkhoasaigon.vn/web/images/files/13655785023.pdf
- https://rimsball.com/ckfinder/userfiles/files/gagugapezufelojin.pdf
- http://darangyi.com/userData/board/file/visafovanuwibeto.pdf
- https://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/dinigoxamivitun.pdf
- https://k-newsletter.com/ckupload/files/72223757117.pdf
- https://nezamirekhaseafoods.com/userfiles/file/55655114490.pdf
- https://derechosenred.org/aym_image/files/54592279846.pdf
- https://gkscam.com/userfiles/file/jeduzeveg.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/1185149f6f9dd4aa1e9d60db1f56cd02/jagikinu.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_off0000d66f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD66F | 16792 bytes |
font_01_sfnt_off0000ee86.bin71bdfdb60db361ee840af45359ba475417195f62edb7afd89335140baa4b0c05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE86 | 10772 bytes |
font_02_sfnt_off0001073f.bin8f63ff966209e9b5a22ab66483315e302585575209a26aeccc8c0178ad64cd4a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1073F | 16808 bytes |
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