MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The document body is heavily obfuscated and appears to be metadata rather than user-readable content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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://coretry.ru/uplcv?utm_term=become+an+android+developer+from+scratch PDF link annotation
- https://solucionaesp.com/ckfinder/userfiles/files/kafigefididipova.pdfIn PDF document text
- http://serviphony.com/tinymce/jscripts/tiny_mce/plugins/phpimage/phpimage/upload/images/file/nobijumexap.pdfIn PDF document text
- http://sintellect.ru/Repository/file/11368135840.pdfIn PDF document text
- http://appinaris.net/ckfinder/userfiles/publics/files/99022026203.pdfIn PDF document text
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f2d0cab544---55295290771.pdfIn PDF document text
- http://wisdomtours.net/upload/file/wojejamija.pdfIn PDF document text
- https://szallas-karpatalja.hu/upload/detozi.pdfIn PDF document text
- https://petikdaun.com/contents/files/luvolif.pdfIn PDF document text
- http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/59619853511.pdfIn PDF document text
- https://bluetact.com/ckfinder/userfiles/files/94333142614.pdfIn PDF document text
- http://westpakusa.com/phpsites/vertical_living/uploads/file/leduwezafapezijiwujumuva.pdfIn PDF document text
- http://uat2.hkha.com.hk/ckfinder/userfiles/files/niginudulitabujitina.pdfIn PDF document text
- http://mea-travel.pl/userfiles/file/jupabetanuj.pdfIn PDF document text
- http://physio-praxismitte.de/userfiles/26471895219.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613483320d7a3---12652739841.pdfIn PDF document text
- http://energo-winstal.pl/userfiles/file/43776649348.pdfIn PDF document text
- http://haohanlegend.com/Uploadfiles/files/votamigowewodetoraboretev.pdfIn PDF document text
- https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/f9b33bb071dbf7fb544312edbe33e22b/13011477982.pdfIn PDF document text
- http://ideatity.com/ckfinder/userfiles/files/92287532921.pdfIn PDF document text
- http://tangneylaw.com/admin/images/file/kugujapawor.pdfIn PDF document text
- https://angelsforwarriors.org/userfiles/files/xixuvolupetuzutebe.pdfIn PDF document text
- http://dgjinhak.kr/DATA/upload/files/202109100953586618.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_off0000b047.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB047 | 15168 bytes |
SHA-256: 58611f3c02e9cf8a10b4f70248256c0f1da7dc3d24beb8b7adb0204857f82681 |
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font_01_sfnt_off0000d6c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6C1 | 11004 bytes |
SHA-256: a786ebf3356ddcf8423c45c37ff09af41738448ab6caed1c3d5d70d7de2a87ac |
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font_02_sfnt_off0000f02b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF02B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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