MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple heuristics indicating it is a link farm pointing to compromised websites, with a high ML score and ClamAV detection confirming maliciousness. The presence of external URIs and links to compromised CMS uploads suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/a7486b272a68ba362d1ecd482c620ab8/50738190601.pdf
- http://sdes.in/uploads/90320047984.pdf
- http://indianmailbox.com/assets/images/userfiles/files/zikumewerexasoxisi.pdf
- http://gurukripapublicschool.com/userfiles/file/xasisa.pdf
- https://stpeterscbs.ca/ckfinder/userfiles/files/26435916782.pdf
- http://netflor.pl/upload/File/pevufitobexesidodore.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/37860b51ce4e5120135af2fc98b0b7c4/noduxam.pdf
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/6c24b4bd6da1edb08fe12c4b7ae34f07/judomijivunotesomevenudaz.pdf
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/26jhmkqkvcn34m3k2hbhkr6o2n/31885916406.pdf
- http://uco-kampen.com/media/files/dusixapudubivegu.pdf
- http://claudiamelchior.it/images/file/30542619127.pdf
- http://sllight.ru/design/img/upload/file/84269026529.pdf
- http://kapelski.pl/userfiles/file/tunowago.pdf
- http://orchid-daikanyama.com/userfiles/file/rawenimev.pdf
- http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/bojipazukimuvajavobisaz.pdf
- http://cn-junsheng.com/upload/file///202162053078898.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7b10df43a---daxupazif.pdf
- http://macabrey-luthier.fr/data/Files/dabedozijemifiw.pdf
- http://sobateracota.ro/mm/file/tumabu.pdf
- https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089d31572c23---semetevopazeno.pdf
- https://kimtuong.vn/isc/public/files/fckupload/file/lofatukeladibofotiresav.pdf
- https://alate.org/admin/fckeditor/editorfile/30673835924.pdf
- http://z500.si/files/piwemuferetelozogij.pdf
- https://castilloexterior.net/ckfinder/userfiles/files/bamoguvadokuzedirogatiz.pdf
- https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/6ec60af0c947adb4c7fddcc324691e16/24748471227.pdf
- http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/e151ab387d4d152b7eafdbf2ced0228e/33507019394.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=plasticidad+mecanica+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_off0000f543.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF543 | 16792 bytes |
font_01_sfnt_off00010d55.bin59faead3dabd355be81d708ef3ba783f06e7ffad43ef27f930cd9797a5bad704 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D55 | 18048 bytes |
font_02_sfnt_off00013ca0.binf5145dae464ff8a34f094e3c8fb7f075161a1f527197980d9b0b210c5daf13c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13CA0 | 10560 bytes |
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