MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points towards a phishing or malware distribution attempt. The document body's obfuscated content and the heuristic firings related to URI and link farms support the conclusion that this PDF is part of a malicious campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://synerhu.ru/uplcv?utm_term=what%2527s+up+danger+instrumental+mp3+download PDF link annotation
- http://tasteofruraleurope.eu/upload/File/tadoviwakipulu.pdfIn PDF document text
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/788e042abf4e6deb41e417a7e14a3707/lexefip.pdfIn PDF document text
- https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a19556054ec---xuletanulajexejamu.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a86328365---78746960071.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/qrcudc53u1lvp1ou0kffoqbud2/wapepixusarowo.pdfIn PDF document text
- http://adance0112.com/upfile/editor/file/kumusad.pdfIn PDF document text
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/0bc1919b6eccac007520dc36f88ea1cb/jimuze.pdfIn PDF document text
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16094912562dea---73901717623.pdfIn PDF document text
- http://tfh-filter.hu/_user/file/vixebon.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087206978ec3---dikopi.pdfIn PDF document text
- http://aklond.com/UploadFilesfile/%5C/2021050711104636.pdfIn PDF document text
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/614epdapncnsg65g6r3q2mddvj/26678240276.pdfIn PDF document text
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/66e07258cafaee22b1d930d5bc131b86/fivuvuza.pdfIn PDF document text
- https://fwullong.com/upfiles/editor/files/nedikekojusumovudogil.pdfIn PDF document text
- http://ixtvs.de/_upload_bilder/_filemanager/file/98269276166.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a84d8590bad---88144193562.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010bde.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BDE | 2880 bytes |
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167 |
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font_01_sfnt_off0001161c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1161C | 5676 bytes |
SHA-256: 880496c915c5ed5ccfa4760f177b0bf956288ac7e046ffeb455a6311bc190b3e |
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font_02_sfnt_off0001295a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1295A | 13420 bytes |
SHA-256: 5b0edef1c70094b3460f36ef45893632de38cd7345578c245baf310356bb3edd |
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