MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs and is flagged by ClamAV as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links pointing to disposable hosting, suggesting an attempt to distribute malicious content or phish users. The ML classifier also strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://coretry.ru/uplcv?utm_term=strained+hip+adductor
- https://guclupin.com/calisma2/files/uploads/39679935889.pdf
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16139521100899---gerapem.pdf
- http://nfrostov.ru/upload/files/41398760113.pdf
- http://delve-cr.com/uploads/pufos.pdf
- http://eugensa.lt/app/webroot/uploads/userfiles/files/90073349498.pdf
- https://giasidaily.com/uploads/userfiles/file/94121222395.pdf
- http://zajazd-broadway.pl/galeria/file/vemudibanoj.pdf
- http://co-mit.com/uploads/files/9645789439.pdf
- https://retake.dk/ckfinder/userfiles/files/vemazud.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161423eaac9514---nuruwegugufibaba.pdf
- https://sssmri.com/ckfinder/userfiles/files/fomebirixodenuje.pdf
- http://sushibelovo.ru/files/bepafedux.pdf
- http://gramercy-grand.ru/files/file/60619567985.pdf
- https://ce-mi.pl/uploads/userfiles/files/84910306542.pdf
- http://4998horo.gmmwireless.com/contents/files/33661433089.pdf
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614f75b017bb0---9769258288.pdf
- https://braus.uz/images/shared/file/28630213490.pdf
- http://www.photonics-science.com/ckfinder/userfiles/files/joropinimuvofibekagip.pdf
- http://195exim.com/datas/files/18394840844.pdf
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16148352889f9e---tulatupeko.pdf
- https://cam-ceeds.org/ckfinder/userfiles/files/legake.pdf
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fa85af2df7---basolulebitijededovul.pdf
- http://uitetenindex.nl/images/uploads/71813925009.pdf
- https://wemservice.com/ckfinder/userfiles/files/wisebat.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_off0000b30c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB30C | 16792 bytes |
font_01_sfnt_off0000cb23.binb2841d3378b4f8de694967725c4d18eeca188660a992fb7c888ce1ce3a11e918 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB23 | 10572 bytes |
font_02_sfnt_off0000e31f.bin4acfe009f02637d2d41cafc3949c30f4b7420d389173233fe6d7fe708936a224 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE31F | 15280 bytes |
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