MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to disposable hosting or compromised CMS uploads, indicating a link farm designed to redirect users. The ML classifier strongly flagged this PDF as malicious. The embedded JavaScript likely facilitates the redirection or further malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 6
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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://indyskischool.com/ckfinder/userfiles/files/61479983464.pdf In PDF document text
- https://i-chat.tw/js/ckfinder/userfiles/files/wobewug.pdfIn PDF document text
- http://happinessgown.com/upload/users/files/25183352664.pdfIn PDF document text
- http://xn--12cf1djdb6cbcafdbu1f1cudgcc8am4wf7htgd9de.com/ckfinder/images/files/20723366157.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16135bbe603662---dorazapewalukor.pdfIn PDF document text
- http://ingenermarket.ru/userfiles/mebunaxagatozimonid.pdfIn PDF document text
- http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/45269799528.pdfIn PDF document text
- http://vanhacollection.com/images/files/56420305953.pdfIn PDF document text
- http://tlumacz-lipno.pl/pdrzewiecki/files/14692642182.pdfIn PDF document text
- http://quranday.org/userfiles/file/daxuvugekudekabakakixu.pdfIn PDF document text
- http://davidhammerstein.org/userfiles/file/45542019445.pdfIn PDF document text
- https://alienaquatics.com/home/gb/public_html/ckfinder/userfiles/files/60394142538.pdfIn PDF document text
- http://szjg.hu/images/file/gigonebusebuwoteresezavig.pdfIn PDF document text
- https://crcnueva.naturasoftware.com/uploads/images/files/38763907607.pdfIn PDF document text
- http://kaus21.com/userData/board/file/wugamem.pdfIn PDF document text
- https://vcubusinesssolutions.com/userfiles/file/74238225553.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613268ba3cf11---podonopomozonotum.pdfIn PDF document text
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/b34b168c748289a3373e972bebb05813/37184624643.pdfIn PDF document text
- http://toyotarent.kr/FileData/ckfinder/files/20210917_73B041BEDA90C2B9.pdfIn PDF document text
- http://nextgenship.net/upload/file/20210902163054888555.pdfIn PDF document text
- http://catherine-massage.com/ckfinder/userfiles/files/3066516189.pdfIn PDF document text
- http://dkmmotor.com/files/userfiles/file/4253091780.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=android+use+mp3+as+ringtonePDF 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_off0000d0e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0E3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e8fa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8FA | 10940 bytes |
SHA-256: cc7a961a2381b23adf52f059f2897baf5ebb423975f8ea263938253059fe8439 |
|||
font_02_sfnt_off00010227.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10227 | 17416 bytes |
SHA-256: 18bfaf003a7255eb87558ab7f5355661ae69bb9615f5259b77632834f144101e |
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