MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of links pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting. This structure is indicative of a link farm, likely used for SEO manipulation or to host malicious redirects. The ML classifier strongly supports the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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 http://brain-sh.tw/upload/file/buzixixade.pdf In PDF document text
- https://techlan.pl/files/file/11721247212.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16070300d06dbf---24574532751.pdfIn PDF document text
- http://defhjdr.friend-match.com/upload/files/povipifakezuxas.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b3ba4862c---japezuluwinemuzubofote.pdfIn PDF document text
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/0f486b59ef5430654594eed745f4ac3d/rinedezodijuna.pdfIn PDF document text
- https://grand-forge.ru/wp-content/plugins/super-forms/uploads/php/files/0fd012ed65adbcb263882ff277bfc314/87147301283.pdfIn PDF document text
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/3e516f0f66afd5363dc280a6268abb06/18557228068.pdfIn PDF document text
- https://www.sudoku-cool.com/ckfinder/userfiles/files/98541213828.pdfIn PDF document text
- http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/0e0876d12e6bc2cad154995760aee97f/supomerizajodagugudula.pdfIn PDF document text
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c3a76f384---tupedoxanev.pdfIn PDF document text
- https://www.indoorclub-informa.com/boletines/img/file/592512530.pdfIn PDF document text
- https://tmtteks.com/files/xamopesapajezamofo.pdfIn PDF document text
- http://jrmhandling.nl/upload/file/98400245628.pdfIn PDF document text
- http://abworder.com/uploads/files/wakozenikomefejanoje.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/53385368237.pdfIn PDF document text
- http://mastersequipments.com/ckfinder/userfiles/files/64529998049.pdfIn PDF document text
- https://medicentrumnz.eu/medicentrum/files/file/94587851792.pdfIn PDF document text
- http://beerskiboot.com/img/upload/file/gogatoguzuremenifomugu.pdfIn PDF document text
- https://mfdesign.hu/files/file/mozubaxawetisimogaxuwabi.pdfIn PDF document text
- http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b84be573ea---92567074963.pdfIn PDF document text
- http://alliusie.com/userfiles/file/sekemob.pdfIn PDF document text
- https://henklinders.nl/henklinders/upload/files/jumobufutilurakatev.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=transfusion+de+sangre+en+medicina+clinica+pdfPDF 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_off0000e5ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5AC | 10928 bytes |
SHA-256: ea776b4ca8fb210b21fb6beefa62a4885c92d5cce0215c42377799a22e4c8b8c |
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font_01_sfnt_off0000feb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEB5 | 20524 bytes |
SHA-256: 6eba1a58fd7271cec104c13c48d69ec807395d459cac4e7e10df58cc3c52b8ee |
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font_02_sfnt_off0001329f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1329F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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