MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users. The document body is heavily obfuscated and unreadable, but the heuristic firings indicate a malicious intent to leverage external links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
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://branchennachweis.eu/userfiles/file/3004605740.pdf In PDF document text
- http://taeguektour.com/FileData/ckfinder/files/20210621_13E212F6D2A98656.pdfIn PDF document text
- https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/253de178c4288f337652d4ed1c619a54/66088863148.pdfIn PDF document text
- http://popnmusic.fr/userfiles/file/baxiguwavudenegutanuvivu.pdfIn PDF document text
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/e7e12754233155b0ddcd17e07892f23b/zesisaxinunorosipinoga.pdfIn PDF document text
- https://www.lsv-wittlage.de/ckfinder/userfiles/files/39016135797.pdfIn PDF document text
- http://dichvutot99.com/webroot/img/files/gofepelum.pdfIn PDF document text
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/afc505bc8ae8373d5f2b4e7fb7f33f48/nudarev.pdfIn PDF document text
- https://rowanmkt.com/Uploads/ckfinder/userfiles/files/3331328958.pdfIn PDF document text
- http://www.dilipprabhavalkar.com/images/file/zidosurijupesemuxaxawu.pdfIn PDF document text
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e54545df59---6563869251.pdfIn PDF document text
- https://bursakaynak.com/userfiles/file/wopadalazewozufujub.pdfIn PDF document text
- https://balajitutorial.com/admin/userfiles/file/94728431267.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/4203c7fae176db47689726cc9ba070f3/nafapavasolirawabuwuni.pdfIn PDF document text
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/ca095f0f4e23ecf79493031272795cfe/55072887320.pdfIn PDF document text
- https://publicbridge.pl/userfiles/file/1956430518.pdfIn PDF document text
- https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/36f4c019525bef1b9c0e1f5adefda17f/ravomamitinifekuxojopunej.pdfIn PDF document text
- https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/a85f19d5e16cbd09e393cef376412f38/zikipuvuz.pdfIn PDF document text
- https://csn-alliance.com/data/files/tanerunivizuwisu.pdfIn PDF document text
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1d57a2836e---finebosisalemosavi.pdfIn PDF document text
- https://agenziadiviaggiocagliari.it/file/xikiw.pdfIn PDF document text
- http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c766a73323---22278823225.pdfIn PDF document text
- http://banhangcongnghe.com/upload/FCK/file/nipunu.pdfIn PDF document text
- http://seashoresilverlabradors.com/clients/4/48/482fd9669fb3260065120a60ccac5e48/File/47422479904.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=behringer+xr18+service+manualPDF 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_off0000fec0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC0 | 16560 bytes |
SHA-256: 0c48e6998df66cb9b8435cd3776bf03dcb97c5fb082502cf6a6481cc20919666 |
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font_01_sfnt_off000129ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129AD | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000141c4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141C4 | 11040 bytes |
SHA-256: 5f40009ddb3522230ac404ba1e19f16ce6ab84b8154d15b1de0c154648fb79b0 |
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