MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The presence of these links and the overall structure suggest an attempt to lure users to external, potentially malicious, content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9908
Heuristics 6
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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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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://wuyioutdoor.com/userfiles/file/79379280192.pdf In PDF document text
- http://usaoxin.com/userfiles/2021-9/file/vadebipofut.pdfIn PDF document text
- http://www.cenlafilm.com/siteuploads/editorimg/file/16065637726.pdfIn PDF document text
- http://www.bluefashion.cz/ckfinder/userfiles/files/xatogowubimogata.pdfIn PDF document text
- https://warungmimpishio.com/contents/files/36274069540.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/161361dcc3687c---82969488353.pdfIn PDF document text
- https://sysyanginguvenlik.com/uploads/files/fepimorel.pdfIn PDF document text
- http://pengyou-english.com/FileData/ckfinder/files/20210918_5F48B046CE841406.pdfIn PDF document text
- https://polytex.de/sites/default/files/46913841056.pdfIn PDF document text
- https://zohopinler.com/calisma2/files/uploads/71911316323.pdfIn PDF document text
- http://tamker.hu/userfiles/file/2711001498.pdfIn PDF document text
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/9011252b57a36f1f413eaabe82f32eca/pojelulizidoboxuvikipofu.pdfIn PDF document text
- http://aihyang.com/userfiles/file/jejuxa.pdfIn PDF document text
- http://cdmatik.com/uploads/file/dadijupu.pdfIn PDF document text
- https://www.shipgo17.com/plugin/ckeditor/ckfinder/userfiles/files/xonifanekusokivegikusek.pdfIn PDF document text
- http://lor-rostov.su/userfiles/files/segemudunamaze.pdfIn PDF document text
- http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89554272833.pdfIn PDF document text
- https://silky.ae/images/bulk_images/files/fevenelikeziseki.pdfIn PDF document text
- http://tmacfashion.com/ckfinder/userfiles/files/zejegopitobunotiwajulilej.pdfIn PDF document text
- http://simoncaulkin.com/images/wetupaguzoraxakefapizepa.pdfIn PDF document text
- https://drddvichitra.com/userfiles/file/xirig.pdfIn PDF document text
- https://marblo.ph/app/webroot/img/files/58681493253.pdfIn PDF document text
- http://uptindia.com/newsimages/file///25174011284.pdfIn PDF document text
- http://hajnysport.cz/FCK_userfiles/file/peluwuwunodu.pdfIn PDF document text
- https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161454d7d93bb0---88713659258.pdfIn PDF document text
- http://millecolori.it/images/file/fedaxasosamegugima.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=easy+touch+android+apkPDF 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_off0000c156.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC156 | 18276 bytes |
SHA-256: 86360581eac3db5f77e723e036c9b9b47a0ea9ae3528189d9c998a79eaaf5ba1 |
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font_01_sfnt_off0000f08f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF08F | 10720 bytes |
SHA-256: 9561d8f5d25714308bb9fbde71ec3cda8785fa0c32a9f5af310bf708dcfbe83e |
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font_02_sfnt_off00010927.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10927 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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