MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to various domains, many of which are hosted on compromised or disposable infrastructure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically highlights this behavior, suggesting an attempt to lure users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 6
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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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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://cylinder96.ru/admin/ckfinder/userfiles/files/81114957551.pdf In PDF document text
- http://donahoelawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/devafatoruj.pdfIn PDF document text
- http://renknh.com/ckupload/files/lubofudabivesux.pdfIn PDF document text
- http://sujitonweb.com/userfiles/files/82555447345.pdfIn PDF document text
- https://sanipro.ma/app/webroot/uploaderfiles/pasafuzolufepaseravota.pdfIn PDF document text
- http://odra.cycling-recycling.eu/imgturysta/files/lofot.pdfIn PDF document text
- https://open-call.fr/uploaded/files/74348048607.pdfIn PDF document text
- http://ninda.vn/userfiles/files/48749094696.pdfIn PDF document text
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/fe5532d22130b466efbe77560b829329/zivadeziwujomaku.pdfIn PDF document text
- https://shreenathtechnologies.com/userfiles/file/fijegoleza.pdfIn PDF document text
- http://artikos.pl/userfiles/file/pezabej.pdfIn PDF document text
- http://www.samuitns.com/image/upload/File/88596162717.pdfIn PDF document text
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134338c9855f---titutubewujodetibo.pdfIn PDF document text
- https://spbmworld.com/anaeter_capital/siteadmin/userfiles/files/60266462606.pdfIn PDF document text
- http://rgn2u.com/userfiles/files/newidoxuvakuxamozu.pdfIn PDF document text
- https://epiphanych.com/images/file/tutawinag.pdfIn PDF document text
- https://ryokanclub.com/FileData/ckfinder/files/20210909_40E174DA6724761C.pdfIn PDF document text
- https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/186779f7c4ae64681678847b3779eda7/62739082107.pdfIn PDF document text
- http://special-pharma.com/upload/files/19142624320.pdfIn PDF document text
- https://naves.cz/res/file/dagujidokipiduj.pdfIn PDF document text
- http://honderhotel.com/UploadFiles/FCKeditor/20210915172929.pdfIn PDF document text
- http://armanetti.com/images/82353369868.pdfIn PDF document text
- http://profstil.az/userfiles/file/68941370602.pdfIn PDF document text
- http://portalpr-b2b.es/img/user//file/_0039679001630592252.pdfIn PDF document text
- http://nikolalepojevic5.com/multimedia/file/75522686807.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+build+android+app+in+react+nativePDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c99e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC99E | 10724 bytes |
SHA-256: a69747ac22404ec208e6e82f378acf152645ed9150b4da61d57e9b4529cb16be |
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font_01_sfnt_off0000e21c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE21C | 17708 bytes |
SHA-256: 8b4db09986ecd43fe51d6f2e46778de91eeb2678c776c42b1beb4d459d2e864f |
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font_02_sfnt_off00011039.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11039 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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