MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by a ClamAV detection and an ML classifier. It contains numerous embedded URLs that point to compromised CMS upload storage and disposable hosting, suggesting a link farm or phishing lure. The presence of external URI heuristics and link farm indicators strongly suggests the document's purpose is to redirect users to potentially malicious websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 http://colorfusion.us/admin/images/file/tizuwadusobo.pdf
- http://sistersaviopublicschool.com/userfiles/file/88955037139.pdf
- http://www.pethouse.es/ckfinder/userfiles/files/8846683769.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/7987dd6d1923bce69e703a4dc8c815ba/lotufalamigeweka.pdf
- http://getampedmag.com/ckfinder/userfiles/files/13636709601.pdf
- https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe717256e5---xabosipamunegoriwedevemos.pdf
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/ecc6a3ae5596b93cf73c752ce885cf23/10375872378.pdf
- http://cokhixnktientien.com/Images_upload/files/zusumalomoforudeni.pdf
- https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608000849d573---vuzus.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d3e6d052c---19027429349.pdf
- http://czechdidgeridoo.com/admin/upload/file/67475782358.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c74d6991dc---88787025367.pdf
- http://diagnosticaedilizia.com/userfiles/files/gewiposutufodoza.pdf
- http://copy2d.com/ftp/image/file/93699129990.pdf
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/377ac22abf3ff4a385b94e9457f03065/94367637566.pdf
- https://istocdukkan.com/userfiles/files/28183802065.pdf
- https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/228189ff9f579685058c61e50b4b0c3f/kurufonenenebu.pdf
- https://luyenthitoeic.info/userfiles/file/kefemikowiribip.pdf
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ea4f5ecf8---kizavabutexezawerowogabej.pdf
- http://isagenixmakessense.com/ckfinder/userfiles/files/15793943330.pdf
- https://davidfoleyinc.com/userfiles/file/27755891240.pdf
- https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074392a73944---bakinopegomatiwiweta.pdf
- http://gonuldoviz.com/upload/ckfinder/files/jutasoradubipuxamido.pdf
- https://chmelo.hu/sites/default/files/file/95044068349.pdf
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/bef1e90b1bfd81a0cd33b721c3b0699d/bimivezewanebojijedemuno.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd8e272f107---71382709954.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=free+kenmore+manuals+online
- 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_off0000d95f.bin3851daabf9de92c32f8dc681eb7a6543ab0f3223cda0a5d94375f7132a98fab9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD95F | 16292 bytes |
font_01_sfnt_off0001037e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1037E | 16792 bytes |
font_02_sfnt_off00011b95.bina30adebaa0b2999de938685988a35eaab8ce99e58af7dcce12b4daa6a45b7324 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B95 | 10340 bytes |
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