MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which are hosted on compromised CMS upload directories or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicate a pattern of using these sites to host or redirect to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://krisoc.ru/uplcv?utm_term=the+legend+of+korra+all+episodes+free PDF link annotation
- https://marathonlaval.com/userfiles/files/80771567564.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613da8bca4cfb---zonumopatopipikaf.pdfIn PDF document text
- https://ontogepszerviz.hu/editor_up/67451492909.pdfIn PDF document text
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613a0c899b881---nabekaximameko.pdfIn PDF document text
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c258b79051---tirojomu.pdfIn PDF document text
- http://eaupureinternational.com/userfiles/file/tisixenisiga.pdfIn PDF document text
- http://chernogolovka.inhome360.ru/admin/ckfinder/userfiles/files/befakalilofusitesux.pdfIn PDF document text
- https://pamukoglu.com/userfiles/file/45458134111.pdfIn PDF document text
- https://hyosungulf.com/uploads/file/91064263141.pdfIn PDF document text
- http://valencia.thepokeluau.com/uploads/files/77325390204.pdfIn PDF document text
- https://nieruchomosciprzetargi.pl/files/file/kopipazefenarirotazazi.pdfIn PDF document text
- http://rspon.pl/images/wyswig_images/file/83368417756.pdfIn PDF document text
- http://konferencii.org/js/ckfinder/userfiles/files/27037218189.pdfIn PDF document text
- http://tvoirostov.ru/ckfinder/userfiles/files/97156136475.pdfIn PDF document text
- http://szwygs.com/upload/94165454618.pdfIn PDF document text
- https://behbehaniprojects.com/uploads/files/bafifusegisixamiv.pdfIn PDF document text
- http://maraulsan.com/ckfinder/userfiles/files/67359867237.pdfIn PDF document text
- https://www.seblocation.com/ckfinder/userfiles/files/86541417449.pdfIn PDF document text
- https://sskundal.com/userfiles/file/76858333905.pdfIn PDF document text
- https://pet-fashion.ro/mm/file/funopodasixurezubuxatin.pdfIn PDF document text
- http://nuovojob.com/userfiles/files/kujetaroxibuj.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_off00010ede.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EDE | 17084 bytes |
SHA-256: 8820081a169373dc2d1b8661757eca1d88fda9212ba4980875e5d30fe9e7f382 |
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font_01_sfnt_off00013b28.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13B28 | 10732 bytes |
SHA-256: 365b96c9ffab68638c7f0ab731e705bd4d86e4b21482f88eceab2b6c979cd1f4 |
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font_02_sfnt_off00015380.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15380 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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