MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to other PDF files hosted on compromised websites and disposable domains. This suggests a multi-stage attack where the initial PDF serves as a lure to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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://pistant.ru/uplcv?utm_term=the+number+of+coins+1.5+cm+in+diameter
- https://tomclarkvoiceovers.com/userfiles/files/51072190559.pdf
- http://otoozevran.com/resimler/files/61519281731.pdf
- http://sushikyototogo.com/uploads/files/jaseb.pdf
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/89046865168.pdf
- http://adaviestransportltd.com/userfiles/file/furubavofifudavuzane.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160b12a6e257d4---katidejonoxibososeg.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608736c565080---56853773497.pdf
- https://foundryindia.org/userfiles/file/tapepuvivonozugipapiz.pdf
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c968756531b---81320795657.pdf
- https://an-professional.ru/img/files/file/77494518711.pdf
- http://suachuaspa.com/upload/images-content/files/7387096097.pdf
- http://annandale1963.com/clients/69704/File/89938924268.pdf
- http://centronegozi.com/public/77694215342.pdf
- https://praward.tw/wp-content/plugins/super-forms/uploads/php/files/5692561667e0397d24ccf0aed04649e0/xabaruradikotodekujo.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/d59cda4d1423f23220af363f9fabbb5b/butudokufisetuzate.pdf
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a043a647278---jexelototewopis.pdf
- https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/86019c787f8907ac7de7ddc2c9cf5d9e/zegirusej.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c082f192d---lonogevijesejifewamibu.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b1f1426b126---kagikixelaruw.pdf
- http://airlineclassof66reunion.com/clients/c/cb/cb51827d251551eca15067b3b23580a4/File/36017610588.pdf
- https://ivanamihic.com//files/18420928948.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_off0000d973.bin37b36a321275e0e1bb8b939f381d33b65776767785dd43a6b219ae10d79fe168 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD973 | 17304 bytes |
font_01_sfnt_off000106dc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x106DC | 16792 bytes |
font_02_sfnt_off00011ef3.bin99afb06f22499d05d8aa2cb1b7c52f2a0c7ebd145da625fbcb2b28753ea11d28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EF3 | 11148 bytes |
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