MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised WordPress sites, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, and heuristics identified it as a link farm on disposable hosting and potentially compromised CMS uploads. The primary purpose appears to be directing users to external, potentially malicious, resources.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
Heuristics 5
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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://chcial.ru/uplcv?utm_term=most+secure+wireless+encryption PDF link annotation
- http://anninhsieuthi.online/upload/files/mabaviworiwuwogegud.pdfIn PDF document text
- http://avesta-hmora.boj.se/uploads/userfiles/files/xuzanom.pdfIn PDF document text
- http://knupress.com/pds/editor/file/kasavezijukuxokotifutena.pdfIn PDF document text
- http://holidayinntorino.com/userfiles/files/piturena.pdfIn PDF document text
- https://edarky.net/data/file/zaligubera.pdfIn PDF document text
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d6faf26489---xumoxezexamatarokubiruke.pdfIn PDF document text
- https://keyword-lda.pt/site/upload/file/diwipizinemugaxomit.pdfIn PDF document text
- http://alt-1c.ru/userfiles/file/zujazodu.pdfIn PDF document text
- http://niengrangchuyensau.com/upload/contentFile/file/rififi.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/99kck0h96q3fh2t6gd09n2n9br/9149274234.pdfIn PDF document text
- http://atsrealtyvietnam.com/upload/files/59900463624.pdfIn PDF document text
- https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16159e26a3c5ce---virofenifizediwabagoketas.pdfIn PDF document text
- http://0-50.ru/userfiles/file/8940245905.pdfIn PDF document text
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140d93753c6e---fupinodatodis.pdfIn PDF document text
- http://foxadv.net/file/begarojopike.pdfIn PDF document text
- https://maintogelonline2.com/contents/files/ratoxevowokudavegugibe.pdfIn PDF document text
- http://symbolfoods.com/files/file///74269411542.pdfIn PDF document text
- https://xuantruongtech.com/images/ckeditor/files/32937628215.pdfIn PDF document text
- http://partner-support.net/user_data/userfiles/files/40135581273.pdfIn PDF document text
- https://rsvforum.com/userfiles/file/rumewelujukiwekex.pdfIn PDF document text
- http://dyneco.kr/userData/board/file/51546331774.pdfIn PDF document text
- https://tumsad.org/img/editor/image/file/83124628467.pdfIn PDF document text
- https://anna-bel.com/app/webroot/files/userfiles/files/55040273001.pdfIn PDF document text
- 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_off0000dff2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFF2 | 17988 bytes |
SHA-256: 08a4da9c09dde0479167d3bfe6cbdc32ef03f8d22ccb4fe554dd98a643002bb7 |
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font_01_sfnt_off00010e21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E21 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012638.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12638 | 10500 bytes |
SHA-256: 9974c4c1d3971493361fa79b0c20ecbc2661fa50b5090f9b9ca794bd1b9c90d5 |
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