MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document that contains numerous embedded URLs, many of which point to compromised WordPress sites. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a tactic to host malicious content on seemingly legitimate but compromised infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://smidgel.ru/uplcv?utm_term=android+file+browser+windows
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080348589652---jewuzimatuvox.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a440febe6aa---zazetadudegoxi.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/h6ioqhls93b4p83e0i0b8o3l54/wukipizolexeje.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c770ccf022e---4771493154.pdf
- http://thecoferfamily.com/clients/7/78/7892d776c92a08c80f86ebc6236678d2/File/jawuwiwilafenatokitape.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb196805f9a---15696555611.pdf
- https://aulacvn.com/upload/fck/file/225900658.pdf
- http://hzdsbg.com/uploadfile/1623398509.pdf
- https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a5185bdaa0---20503924486.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/6a2eeaebdde84a5f816b60512cab2678/55961551299.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f5df319ca5---najenadanul.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aeaba885d0---banuwitituxawuvaduje.pdf
- https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/bf81afdd0e1768731ec08e96691443e1/babopabagog.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cccb76d9b8---fawad.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a926bfe0f6a---gelisuwexex.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf49889301---rafogusivi.pdf
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/entsrohstk5rdarjo8dcapcoss/46301062630.pdf
- https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/617357156267607413f46a6a9d0ef218/26717172680.pdf
- https://aartipalette.com/userfiles/file/javagelevaxoremaxorul.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd658cc3da5---getajafa.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da3e13499db---xigelogojunali.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a0d0ea1d44bdcf0f7c31dd8f429db612/82750247355.pdf
- https://shopabrang.com/images/files/58241424980.pdf
- http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608921190cab3---41350140572.pdf
- http://gancza.pl/userfiles/file/wixam.pdf
- https://transmar.biz/ckfinder/userfiles/files/45127733084.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_off0000f926.bin496955b517d4815a1267f55f80a754eb7fda9fa6992de4b67a7f2175286ec21d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF926 | 10296 bytes |
font_01_sfnt_off00011071.bind2f6566eab61f0d0da6732729a5acb847c92b82a6a8dcc2c63c1ccd85a7e924c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11071 | 17756 bytes |
font_02_sfnt_off00013e9f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13E9F | 16792 bytes |
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