MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier strongly indicated maliciousness, and multiple heuristics identified the PDF as a link farm pointing to numerous external URLs, some hosted on compromised CMS uploads. While no scripts were directly extracted, the nature of the links suggests a potential distribution vector for further malicious content or SEO abuse. The document's structure and embedded links are indicative of a phishing or spam campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://hsiwww.com/image/files/20210726_144633.pdf In PDF document text
- http://www.rodnolespropertymanagement.com/siteuploads/editorimg/file/34921164233.pdfIn PDF document text
- http://dinobajka.pl/Upload/file/26558168119.pdfIn PDF document text
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081b37c15ab0---75018674110.pdfIn PDF document text
- http://expertsystemgroup.com/file_media/file_image/file/memidurefagovufadomop.pdfIn PDF document text
- http://nuraski.pl/wsg/userfiles/57971065953.pdfIn PDF document text
- https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612a4b8da8f01---refutokopiv.pdfIn PDF document text
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/c838192b0ae5980898715cda34d0328a/7804752346.pdfIn PDF document text
- http://akcjonariusz.com/UserFiles/file/majujeligovexomivag.pdfIn PDF document text
- http://haozuowenwang.com/imagefiles/file/bovexeporopavokuzowobix.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607660c48e6ef---segusezugafotibotaxupuw.pdfIn PDF document text
- https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/17d1f1444748e71c42868e264abf2d63/wulemikuzevefezede.pdfIn PDF document text
- http://someteme.com/archivos/_20210704094508.pdfIn PDF document text
- http://studiomontironi.eu/userfiles/files/wituverozosa.pdfIn PDF document text
- https://millinerandassoc.com/files/file/53918304051.pdfIn PDF document text
- http://aceonlinementors.com/userfiles/file/52346834534.pdfIn PDF document text
- https://tvsporedi.si/vsebina/fogemedakotemazulitano.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe6abd4cc6---werabew.pdfIn PDF document text
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16077c63a35713---diponivurubinurewokedozu.pdfIn PDF document text
- http://sicilalluminio.it/userfiles/files/51810804301.pdfIn PDF document text
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/311614279268.pdfIn PDF document text
- https://villadorottya.hu/uploads/frontend/files/kirujep.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=curso+de+electricidad+hogar+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_off00011460.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11460 | 10928 bytes |
SHA-256: 81ee592f4aee9d5e731684d4892dfdfb1a37c654de4be6c8447b1c055a667015 |
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font_01_sfnt_off00012da2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12DA2 | 19624 bytes |
SHA-256: 903dd979734d1d828896115f0edd541617cf0e83d8382fe26118c09fb95a3c6e |
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font_02_sfnt_off00015fe4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15FE4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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