MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Numerous heuristics indicate the PDF contains a link farm pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The embedded URLs are likely part of a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://krisoc.ru/uplcv?utm_term=fire+safety+in+the+home+pdf PDF link annotation
- http://humanitool.ru/userfiles/file/wumozinakudisu.pdfIn PDF document text
- https://propiedades.net/ckfinder/userfiles/files/femode.pdfIn PDF document text
- http://clubmaniacr.com/campannas/file/zegudezareni.pdfIn PDF document text
- http://kolesnikov.pro/ckfinder/userfiles/files/paxerufinisojudonuwa.pdfIn PDF document text
- http://dglytbt.com/upfolder/e/files/20210824201840.pdfIn PDF document text
- http://kuppersbusch.hu/userfiles/files/sefefekozos.pdfIn PDF document text
- http://bellina.pl/userfiles/file/tekujubuzumilaf.pdfIn PDF document text
- https://kingwrapcarspa.com/upload/files/tedafofafus.pdfIn PDF document text
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/161282533f194e---95397787328.pdfIn PDF document text
- http://hiroshima-teishaku.com/userfiles/file/59686215463.pdfIn PDF document text
- http://volkshilfe-vlbg.at/images/content/files/70725853193.pdfIn PDF document text
- http://fitsiluet.cz/data/file/poxowiditiranal.pdfIn PDF document text
- http://sarkanyhajo.hu/files/file/xalugugukeb.pdfIn PDF document text
- http://www.bash.cl/media/file/22421763885.pdfIn PDF document text
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16090e23a0217e---4613268380.pdfIn PDF document text
- https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/cmvn8reqphfmubsgur58a0r2g1/lexogunexapenup.pdfIn PDF document text
- https://clubforeducation.com/FCKeditor/userfiles/file/28569934720.pdfIn PDF document text
- http://alpinedelhi.com/userfiles/files/dilofemuxifivazugul.pdfIn PDF document text
- http://afghansolar.com/userfiles/file/75143667268.pdfIn PDF document text
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afbb5fe4612---ziwanaseranoz.pdfIn PDF document text
- http://kanstm.com/ckupload/files/72434625263.pdfIn PDF document text
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c913e64dea---mepedoxizodug.pdfIn PDF document text
- 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_off0000d599.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD599 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000edab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDAB | 16640 bytes |
SHA-256: f1ac883b213cef2f79ddc726e3c64c08e33f07a38465131bccc4355a30f8e1fe |
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font_02_sfnt_off000118b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118B4 | 10808 bytes |
SHA-256: ea6dcfa821f5764f3d6f55d2d0d3d7478590853a78e131b3b2d683ffd1e28db8 |
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