MALICIOUS
164
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. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, characteristic of a link farm used for phishing or malware distribution. The presence of embedded JavaScript suggests it may be used to further obfuscate the malicious links or initiate a download.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
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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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 http://nenkin-t.com/upload_img/ck/files/62229877830.pdf
- http://refpecsbelvaros.hu/kepek/files/26332447772.pdf
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/fb74fa16f0240cd6a0331afd5a526961/xegupudixa.pdf
- https://at2-turbo-j3t.com/contents/files/16726294486.pdf
- https://learnrkb.jugalbandiresearch.com/ckfinder/userfiles/files/13303945397.pdf
- http://annassteen.com/ckfinder/userfiles/files/puvemesetikades.pdf
- http://residencelesaline.it/userfiles/files/2481595180.pdf
- https://ooobelkom.ru/ckfinder/userfiles/files/19563733606.pdf
- https://www.nhabe.com.vn/ckfinder/userfiles/files/95136740182.pdf
- https://robustbrakes.com/administrator/imagetemp/file/96497490738.pdf
- http://chipgene.com/image/files/20210903_084943.pdf
- https://seeandhearbetter.ie/img/shop/contents/19662017931.pdf
- https://fanaf.com/article_ressources/file/dafaloxiroz.pdf
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/7de2bf1ba2390e3a44e01653d984bd8c/57337549625.pdf
- http://atletika-pardubice.cz/files/file/fugezelabokavab.pdf
- http://movitecnic.com/ressource/site-image/files/jerolotiputekeralap.pdf
- http://aiaato.com/FileData/ckfinder/files/20210909_B3599C9A0B487AEA.pdf
- https://bi-kiesabbau.de/cmsimple/images/file/56830765651.pdf
- https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/ff00e7b95fe880a6ff502a6182e4130e/91274877879.pdf
- http://ingfrimale.com/userfiles/files/11262637116.pdf
- http://autostyle-japan.com/js/upload/files/49593482796.pdf
- https://e-tta.com/app/webroot/userfiles/files/56002567432.pdf
- http://hattingtoemrerogsnedker.dk/userfiles/file/65661271249.pdf
- http://hermanosgolbano.com/admin/fckeditor/editor/filemanager/connectors/phpfile/27086206361.pdf
- https://creteotels.gr/FCKeditor/userimages/file/fazenawupupiwani.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613db6fb6a6a1---fexil.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=my+girlfriend+is+alien+english+subtitles
- 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_off0000dfd2.bin42422c4714a3aae55e7c0700ef54798d3152daf67a45b3a3f74d4357a04378ec |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDFD2 | 18156 bytes |
font_01_sfnt_off00010ea4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EA4 | 16792 bytes |
font_02_sfnt_off000126bb.bin287a1b9f4746624fb038c342eee64af73bcdac6323cbac413895c405549e8966 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126BB | 10860 bytes |
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