MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that form a link farm, a common technique for phishing or distributing malware. Heuristics indicate these links point to compromised CMS uploads and disposable hosting, suggesting malicious intent. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=four+quadrants+robert+kiyosaki+pdf PDF link annotation
- http://nasfthr.com/userfiles/file/girilirirupeni.pdfIn PDF document text
- https://duel.pl/userfiles/file/93356656491.pdfIn PDF document text
- http://alt-1c.ru/userfiles/file/japowijiwuzoxexuvujabig.pdfIn PDF document text
- http://yibetter.com/data/files/11698889840.pdfIn PDF document text
- http://ekachaiguitarist.com/ckfinder/userfiles/files/zovamak.pdfIn PDF document text
- http://cargologicru.com/sadm_files/72198082601.pdfIn PDF document text
- http://inphilong.com/upload/files/94442639423.pdfIn PDF document text
- http://envisystem.com/upload/userfile/files/59873972473.pdfIn PDF document text
- http://theprojectmanagement.guru/cote_dor_import/admin/ckfinder/userfiles/files/59245086682.pdfIn PDF document text
- http://remont-etalon.ru/upload/files/57446269567.pdfIn PDF document text
- http://woodlander.sk/grafika/file/nokidupirenoz.pdfIn PDF document text
- http://bukharaatlanta.com/sites/default/files/file/73768406471.pdfIn PDF document text
- https://lhorizon.ca/uploadHorizon/file/riwigosuwem.pdfIn PDF document text
- http://wohntraumgmbh.at/gitiw.pdfIn PDF document text
- http://nyitotthaz.hu/userfiles/files/71438067103.pdfIn PDF document text
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d82f541c3d---48834750485.pdfIn PDF document text
- https://hiddencliff.kr/FileData/ckfinder/files/20210914_8F1F24743BD86ACB.pdfIn PDF document text
- http://miroslaws.com/ckfinder/userfiles/files/86925600888.pdfIn PDF document text
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/abd9dd29c08d845549c30b3fbba57b02/58708719307.pdfIn PDF document text
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/7c8f9557614e4e2488460c500fc15a41/37342305061.pdfIn PDF document text
- https://marblo.marblobaths.ph/app/webroot/img/files/kakomeze.pdfIn PDF document text
- https://peptidturkiye.com/ckfinder/userfiles/files/telilabupekomanuf.pdfIn PDF document text
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/161349292a0345---29406379847.pdfIn PDF document text
- https://afra24.com/basefile/afra24/files/85233905925.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_off0000cd90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD90 | 17076 bytes |
SHA-256: 95a4ab29fab1a4f447e0d8f3a51bf6ebbd13ce3691afc71d2d153e807b88d421 |
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font_01_sfnt_off0000f9bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9BC | 11012 bytes |
SHA-256: da7e7fd7a079016ce849ec3d05cee787dd3f99c73a1e8fdc882aa4d88f503ac8 |
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font_02_sfnt_off00011315.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11315 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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