MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. Heuristics indicate it functions as a link farm, with multiple URLs pointing to compromised WordPress sites. These links likely serve as redirects to malicious or phishing content, a common tactic for initial access via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160706ea858d5e---fepoxagonef.pdf
- https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/90v6ij6u6kd8f37eelv6smrq36/73438998107.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096e21b1342f---fegakolenozifuza.pdf
- https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/zelasetasaxeke.pdf
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbb0a70cc7---bebokaferezuwe.pdf
- https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d351d63631---kadoxarivevod.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8cc76e64b3---mazelelurapanomunurakuwo.pdf
- https://noventa.cz/media/files/file/bovawetidusizatatetawiti.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/4667bca75b9f8191019f5f2d04f08393/sapor.pdf
- https://suativisamsungtaihanoi.net/upload/files/88618605807.pdf
- https://windsbs.biz/files/file/75459913593.pdf
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079708ba0b0b---xokomogobabebiminalivalon.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/88cddac9fca2008d75f1686dab026534/63806027101.pdf
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16095aa291a9e2---xogorado.pdf
- http://bydnjl.com/userfiles/files/5134666806.pdf
- http://xn--e42bt3l.net/upfile/files/75264686391.pdf
- http://buyyoutubelikes.com/ci/userfiles/files/vuweguwubobimamakugozuna.pdf
- https://giorgiosantinelli.it/file/relulefamaximu.pdf
- http://shs1977reunion.com/clients/41590/File/pegixekemobobesuwomoxaz.pdf
- https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/0cf7540db3fd892cf7b33ebf2470e2ae/lamexagigazoriloxukapuvod.pdf
- http://simonide.org/userfiles/file/5599052719.pdf
- http://asea-admin.com/_userfiles/file/20210516201914.pdf
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833870d7aa4---foxijimazuje.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=sales+and+operations+planning
- http://e1pl2.nazwa.pl/busy/fotki/file/38254315387.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_off0000eb9c.bin641e72504b79e320554cf9459e4298d5b27ba5df9a7d9f254d6b35e52c77b38f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB9C | 16132 bytes |
font_01_sfnt_off00011543.bin303c9fd706432345f9d2182f58d5afe2b959aaf3d3a0b88f843e96f3ce071d03 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11543 | 10640 bytes |
font_02_sfnt_off00012d78.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D78 | 16792 bytes |
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