MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised WordPress installations, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of URLs with 'utm_term' parameters indicate an attempt to lure users to specific content, in this case, disguised as a calculator app download. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9949
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://medvor.ru/uplcv?utm_term=calculator+android+apk PDF link annotation
- https://ecableapp.com/FCKeditor/FCKimgUpload/file/wemikedofitijutow.pdfIn PDF document text
- http://watch62.ru/files/files/9846973682.pdfIn PDF document text
- https://varida-tech.com/ckfinder/userfiles/files/66613631559.pdfIn PDF document text
- https://hotelindigha.com/FCKeditor/file/6574544779.pdfIn PDF document text
- https://pasarangroup2.com/contents/files/40987260961.pdfIn PDF document text
- http://lonerangerfanclub.com/ckfinder/userfiles/files/resexopipabovutamurigo.pdfIn PDF document text
- http://hemeringen.de/ckeditor_ablage/userfiles/files/11058235356.pdfIn PDF document text
- http://vdavloeren.be/userfiles/files/61320649635.pdfIn PDF document text
- https://pecintajp.com/contents/files/ganazojowozetipeko.pdfIn PDF document text
- https://impeka.lt/components/com_mijoshop/opencart/image/data/files/8207339748.pdfIn PDF document text
- https://wyslijpaczki.pl/app/webroot/files/userfiles/file/67345963845.pdfIn PDF document text
- http://www.tahi.hu/ckfinder/userfiles/files/87159299086.pdfIn PDF document text
- http://sd-admin.fazendapenaazul.com/ckeditor/uploads/files/ronuf.pdfIn PDF document text
- http://kaie.org/userfiles/file/20210912142308.pdfIn PDF document text
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161426165c0760---37021693771.pdfIn PDF document text
- http://jjmcp.jp/userfiles/Image/file/filumevogunabapiwusuwep.pdfIn PDF document text
- https://www.orthovision-lublin.pl/ckfinder/userfiles/files/96440244248.pdfIn PDF document text
- http://goodwill.as/userfiles/file/fovito.pdfIn PDF document text
- http://perles-del-beya.com/userfiles/file/tuduvonu.pdfIn PDF document text
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613493cfa3591---40825803829.pdfIn PDF document text
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/b638096d7041c2946e145c37d2620d01/48906949852.pdfIn PDF document text
- http://pawsandtiaras.com/ckfinder/userfiles/files/dugejap.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/161330442a0fd4---zibudejulamaz.pdfIn PDF document text
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/5mbun5jmm5373mpjv6654vc2eh/67330916950.pdfIn PDF document text
- https://ceral.pl/ceral/pliki/file/79706457246.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_off0000d4ef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4EF | 10428 bytes |
SHA-256: 23e50f656ae593f870209fb6d8acd343c533e8ece896204a9351d93112cf27ba |
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font_01_sfnt_off0000eca5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECA5 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000104b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x104B7 | 17980 bytes |
SHA-256: 41c5174fa147280ed2abcd8400b195155f8924507a4c2dad2ddb620db4684a6e |
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