MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains a large number of embedded URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm. These links likely lead to phishing pages or further malware downloads, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://crysiq.ru/uplcv?utm_term=best+jobs+with+little+education
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f96917b72---lizodemovusunikokekiw.pdf
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/lt7lfck2ilc4vr7bdmp7v65uif/puxakadu.pdf
- https://an-professional.ru/img/files/file/51360954004.pdf
- http://sarlampa.ru/upload_picture/lezawamopitorakew.pdf
- https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/03cbb0f2f059fc8884596f3552809cdc/guwulobonixobemoxex.pdf
- http://dfh-consulting.com/userfiles/file/kijef.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bc71f41abb9---fijosevam.pdf
- http://flambotour.it/themes/userfiles//files/bepilenixusejedufon.pdf
- https://k-newsletter.com/ckupload/files/ramotezimoveriroxuraw.pdf
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160db6352339b9---19190026493.pdf
- http://orderkai.com/uploads/files/24132160205.pdf
- http://efuegypt.org/userfiles/file/40125944822.pdf
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/44041c8c2533254be9036f2df214d7cf/27440855441.pdf
- http://iwilldoit.ru/uploads/files/files/54546257802.pdf
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/3jhg2utq3k1l6df4o7cjhqjdss/sawutipifomusakijozidu.pdf
- http://skiflogistics.ru/userfiles/file/35282145062.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/322c72ee223a3dc1b0aa4a8449643cfc/nasalikanun.pdf
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ce911b56999---jegatajuso.pdf
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160836fc9a1d35---kiwavar.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5e0575b4f---neribafadimowozexim.pdf
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/7177f4cd93a8ba2af88d91e4dad98670/62528772842.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ade02977ba2---40316565399.pdf
- http://chanakol.com/ckfinder/userfiles/files/jomawifubub.pdf
- https://virtualpulse.eu/UserFiles/file/39594054583.pdf
- https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084ff3423524---taxilunomodibadokegujep.pdf
- https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/ab6ffdefbda50134a78ea150ac3052e8/wudaxoditelufapogogaxo.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000caf5.bin3dbb36f458358e60b413c49e485a88e9249ea333e31e66099a8d593669424bd0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCAF5 | 15868 bytes |
font_01_sfnt_off0000f3df.bin3e20dfd30ff64f52b36076fcffe4e698ea39631a3bcd20de358f6c61a0993d13 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3DF | 10876 bytes |
font_02_sfnt_off00010d02.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D02 | 16792 bytes |
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