MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm used for phishing or malware distribution. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis indicate a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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=toneboosters+equalizer+4+manual PDF link annotation
- http://taeguektour.com/FileData/ckfinder/files/20210821_B3F9E5883E929556.pdfIn PDF document text
- https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/54082afc3203a9c20d7f35b2f93e9248/bewuvav.pdfIn PDF document text
- https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/aev0s0qlae5aaj8uhpqp63ji0t/74989438357.pdfIn PDF document text
- http://ikkosushi.com/uploads/files/bozalila.pdfIn PDF document text
- http://gayaarchi.com/userfiles/file/20210520045202.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160896b6093c72---gusewutezeguzesaxofaker.pdfIn PDF document text
- http://helpibr.org/clients/f/fe/feaff840d005acecac0f151e8679c8db/File/51420157949.pdfIn PDF document text
- https://limadelimon.com/images/file/deripuligodetevuzojur.pdfIn PDF document text
- http://sung1.com/upload/files/79655777259.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608b047d8753f---36528800493.pdfIn PDF document text
- http://highendschmiede.de/highendfiles/file/najeguzajizupolomo.pdfIn PDF document text
- http://dighakanchaninternational.com/FCKeditor/file/4652617005.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/8341059929.pdfIn PDF document text
- https://stiglic.sk/userfiles/file/sumonigolewudiroxeb.pdfIn PDF document text
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1608757729681c---72325190607.pdfIn PDF document text
- https://songhong-thudo.com/img/files/1353160570.pdfIn PDF document text
- https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/csc1sgjptpc4usdth5r7ekq66k/tumupulowudanukij.pdfIn PDF document text
- http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609307836f896---rexesutasepuken.pdfIn PDF document text
- https://classconnbio.com/img-jacson/files/poxevogeb.pdfIn PDF document text
- http://minuspk.ru/minuspk.ru/userfiles/file/20448595843.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_off0000cc6e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC6E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e485.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE485 | 10756 bytes |
SHA-256: 2a2aa3daedfb5e42fac7340956a8f77576a0187b9441a075c8fd3e355e1c1235 |
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font_02_sfnt_off0000fd4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD4E | 17760 bytes |
SHA-256: 40239a098786c13aaa754d0ba99982ef9495d11f2f19d1cf05a68f8318680bb9 |
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