MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised websites, many of which host PDF files, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and a link farm on disposable hosting indicates an attempt to distribute malware or phish for information.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/d1131464481497f7d79df21c03458485/73999320335.pdf In PDF document text
- http://nyitotthaz.hu/userfiles/files/javafatosezudegivofimexev.pdfIn PDF document text
- http://maynenkhipuma.vn/quangbasanpham/app/webroot/upload/image/files/19446635748.pdfIn PDF document text
- http://flyingwedge.com/uploads/assets/file/99334499246.pdfIn PDF document text
- http://dakov.hu/_user/file/riperofidinixe.pdfIn PDF document text
- https://tectrongim.com/uploads/files/podowelorovasanimov.pdfIn PDF document text
- http://www.sauminandy.com/fckimages/file/37211239836.pdfIn PDF document text
- http://gsemilia.it/userfiles/files/48014377424.pdfIn PDF document text
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613fde36079db---zodoxojakekarola.pdfIn PDF document text
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/culaiucvh5669mbv0lpad174e1/fuvuratelipoxuripota.pdfIn PDF document text
- https://gagiongvitgiong.com/ckfinder/userfiles/files/nonawusoxujivij.pdfIn PDF document text
- https://shibbirs.com/media/files/30198022291.pdfIn PDF document text
- http://scbczy.cn/up_files/file/20210905_140433.pdfIn PDF document text
- http://hamishehbaharcarpet.com/My_Project/Hamishe_bahar/ahar_img/files/58607901507.pdfIn PDF document text
- https://ahreco.com/uploads/news_file/51659409732.pdfIn PDF document text
- https://solturism.ro/images/file/94157348709.pdfIn PDF document text
- http://gilendor.cz/userfiles/file/14917656608.pdfIn PDF document text
- http://bienbao.net/uploads/files/tiruwota.pdfIn PDF document text
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343d52084d6---5782420014.pdfIn PDF document text
- http://barsugo.com/ckfinder/userfiles/files/52193734380.pdfIn PDF document text
- https://master.plus/wp-content/plugins/super-forms/uploads/php/files/42524b70bc47e4f4a250bd2ca9083c35/zasimova.pdfIn PDF document text
- http://shengyaweb.com/uploadfile/file/2021090914451947.pdfIn PDF document text
- http://nasfthr.com/userfiles/file/41527381306.pdfIn PDF document text
- http://22vek-omsk.ru/fck_editor_files/files/3621381671.pdfIn PDF document text
- http://4bx.pl/public/file/32680516643.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=download+android+beamPDF 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_off0000b113.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB113 | 14348 bytes |
SHA-256: b71b5135238654e2032e06ff62c4ea17e409ff99cce4c65c49a418b92a42478e |
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font_01_sfnt_off0000d4e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E5 | 10372 bytes |
SHA-256: 584091c9c0d9bf64d84ed2477cb41eb9a0d07f6ecd04b616e3e48f3fa868b7bc |
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font_02_sfnt_off0000ec49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC49 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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