MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a large number of links, many pointing to compromised CMS upload directories, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is unreadable, but the heuristics and URLs point to a malicious PDF designed to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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 http://studiocariola.com/userfiles/files/fakowanevavovoxevibaxuva.pdf
- http://textingrights.com/userfiles/files/miwobemuri.pdf
- http://ocvitlucky.com/vietkiendo/upload/file/24555621243.pdf
- http://nuovojob.com/userfiles/files/26248034565.pdf
- http://www.mezmat.ru/ckfinder/userfiles/files/girejazuwegevuzol.pdf
- https://1877painters.com/FCKeditor/file/dosetopotapenexukurejew.pdf
- https://lapakunited.com/contents/files/1252196262.pdf
- http://markjfox.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/19814999267.pdf
- http://skupka54.ru/upload/m/mivumeladuwowolibu.pdf
- https://jamisonfurnace.ca/userfiles/files/95539606718.pdf
- https://zbmbudomont.pl/userfiles/file/wojiviwiwonizepogimakozug.pdf
- https://mitrasuksesku.com/userfiles/file/84686636302.pdf
- http://frutapac.com/ckfinder/userfiles/files/85072854242.pdf
- http://avanti-kuhni.ru/upload/files/88145864452.pdf
- http://itfkarnataka.com/cvsprojects/SSK/Source/2.0.0/images/files/vukaxeluvomafuvemev.pdf
- http://nage-z.com/ckfinder/userfiles/files/semuketumijuxa.pdf
- http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161339aa248883---tulufusugekesis.pdf
- http://svarovani-tig.cz/userfiles/file/tojuvatanu.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a316b7777a---xesometofaxupobufadoz.pdf
- http://ccadl.com/files/20210904160419.pdf
- http://i-tos.com/userData/board/file/3430502017.pdf
- https://erdenetpost.mn/userfiles/files/jumapul.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/bc73159076254e17861b7b4a6bbb4d6c/bunodupimujinirusakol.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=free+instagram+followers+increase+apk
- 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_off0000ee8b.bin5440596c83caefc6ac1f63d88b36a3dc3656aa73f6b1f4d3c587789753ebf2f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE8B | 10976 bytes |
font_01_sfnt_off0001081c.binb7b8c64a47b88a8c028f73241aa1a8338f0d83834e088b80af8825e8d365fffe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1081C | 19664 bytes |
font_02_sfnt_off00013bf2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BF2 | 16792 bytes |
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