MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm hosted on compromised WordPress sites, with URLs pointing to malicious PDF files. The 'free download pdf reader for win 10' UTM term suggests a social engineering lure to trick users into downloading malware. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075083e15b2a---30949590285.pdf In PDF document text
- http://worldtile.net/jangheung/userfiles/file/91383284487.pdfIn PDF document text
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfccf9136c---xemotodarutefunofowesisem.pdfIn PDF document text
- http://romengo.com/ckfinder/userfiles/files/8320601797.pdfIn PDF document text
- https://napraforgohotel.hu/upload/file/69806547655.pdfIn PDF document text
- http://moje-stranky.eu/userfiles/file/90410290007.pdfIn PDF document text
- http://ugyvednok.hu/userfiles/file/19785908668.pdfIn PDF document text
- http://win-sonic.com/ck_imgs/files/lixex.pdfIn PDF document text
- http://cwesp.biz/upload/file/lefap.pdfIn PDF document text
- http://pumarecovery.com/userfiles/files/loxojufaxijeku.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/98e5946a56ab9e20bd32e5eecc287f0c/55823835432.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a78c1be616b---vaweraze.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075dd1d6767e---nolekozadidezeronexusevax.pdfIn PDF document text
- http://leasingtowers.com/ckfinder/userfiles/files/94530162557.pdfIn PDF document text
- https://audreyheselmans.com/_files/file/15654908482.pdfIn PDF document text
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce1c940070---52567168634.pdfIn PDF document text
- https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/6bba052af9fd80c696ca31b912a50304/78929319345.pdfIn PDF document text
- http://mya1fc.com/files/ckuploads/files/56154749502.pdfIn PDF document text
- https://cjsc.se/ckfinder/userfiles/files/84734029233.pdfIn PDF document text
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/16108cb63512d6---norafemavawakafom.pdfIn PDF document text
- https://eurosan.pl/user_images/file/27215143887.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=free+download+pdf+reader+for+win+10PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c4c3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC4C3 | 20792 bytes |
SHA-256: 909772e90896022fefd3d0672e0cda887834663dc6deb808734022f7e4a7deb1 |
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font_01_sfnt_off0000fbb6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBB6 | 10464 bytes |
SHA-256: d0d95871e194c46f5f6fb4a4be5cc9e950c8dc340518abb9943eb8a4fa7526a4 |
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font_02_sfnt_off00011391.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11391 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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