MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to various websites, including those hosted on compromised CMS platforms. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and detection results strongly suggest a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://fullcolorspandoeken.nl/userfiles/file/35172277503.pdf In PDF document text
- http://bestapp4u.com/admin/uploadedfiles/file/vasitinemopibagulumesonon.pdfIn PDF document text
- https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/s3tr60dfg6suhosmgor3neb2ss/53744599771.pdfIn PDF document text
- http://xn--aknmedcal-wpbe.com/uploads/file/34108229373.pdfIn PDF document text
- https://lolakarimova.uz/ckfinder/userfiles/files/42907377089.pdfIn PDF document text
- https://www.sistemkabin.com/ckfinder/userfiles/files/50686415242.pdfIn PDF document text
- https://sanidom.pl/img/file/wowapiruwanilepenazij.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1af94b690---nubuze.pdfIn PDF document text
- https://bonacorsi.it/file/67260867352.pdfIn PDF document text
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609da7252fab4---nuxakemodi.pdfIn PDF document text
- http://mamtaniketan.com/userfiles/file/garigezopufedojugunuxex.pdfIn PDF document text
- https://kcss.hu/korosi/userfiles/file/waligozawajikunanufurebof.pdfIn PDF document text
- http://toanlinh.vn/upload/files/fefubukazekadam.pdfIn PDF document text
- http://savitapiti.org/ckfinder/userfiles/files/wijopetitebozaperujukepel.pdfIn PDF document text
- https://cairparavel.ro/app/webroot/files/userfiles/files/8683389943.pdfIn PDF document text
- https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/160841134ea720---kaban.pdfIn PDF document text
- http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/160782a5422159---32111759613.pdfIn PDF document text
- http://alternatifmedikal.com/img/userfiles/files/niferumixobuvoxepabug.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/1a977e1e4bf4677e27499b7d3f884d99/furerawujusezoxof.pdfIn PDF document text
- https://galerie-louise.be/userfiles/files/39267663083.pdfIn PDF document text
- https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/cd4568e4e66276634ae8cd2017af1ebc/35606417278.pdfIn PDF document text
- http://tatagz.com/uploadfile/files/35904367020.pdfIn PDF document text
- http://ipllaser.in/uploads/37332235788.pdfIn PDF document text
- http://dansensvenner.dk/imagesfile///23011854605.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=landscape+painting+tutorial+pdfPDF 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_off0000d922.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD922 | 10852 bytes |
SHA-256: d7210c54884ac19db210a5de58cf5953005fec934d3f0faaed3f56a00c0fc12d |
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font_01_sfnt_off0000f220.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF220 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a32.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A32 | 18392 bytes |
SHA-256: 02bb9286a829b1d095aec13e77470a7f58869897f3e6e33fe3d4cc7862a4f908 |
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