MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, directing users to compromised CMS upload storage and potentially disposable hosting. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document's purpose is to trick users into downloading a password-protected archive, likely to bypass security scanning.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1612f26ca75549---64561233593.pdf
- https://tunhuaduytan.com/upload/userfiles/files/depavuzaxij.pdf
- http://bkdesign.ee/userfiles/file/50295038133.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/5679cbc24a1190aed5f617b3302e872b/44523271828.pdf
- https://suativisamsungtaihanoi.net/upload/files/60437536837.pdf
- http://youngdongtec.com/userfiles/file/welawajum.pdf
- https://www.iieng.org/editor/ckfinder/userfiles/files/1572728968.pdf
- https://semangkabiji.com/contents/files/98435112879.pdf
- https://autosaloncenter.com/uploads/files/mowiletovilu.pdf
- https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/60907ce30479415df8be612efcb22b92/72771263548.pdf
- http://www.coverseg.com/uploads/ckfinder/files/tugozeta.pdf
- https://sunridgecorp.com/uploads/files/202109110150117700.pdf
- https://rosenstein.lu/userfiles/files/42795574720.pdf
- http://smsalumni1971.com/apadmin/uploads/userfiles/files/61553744389.pdf
- http://luxmeterthai.com/ckfinder/userfiles/files/laragoweliwodewa.pdf
- https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd80f9b85c---1439652530.pdf
- http://geopraxis.it/userfiles/files/8480140482.pdf
- https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/9e1e23e9fba227cbd5d3e18a6f19a179/37132568245.pdf
- https://www.xtremefitness.com.au/application/third_party/ckfinder/userfiles/files/totod.pdf
- http://tko.wavedev.net/img/files/files/wibenavatexokizozuxob.pdf
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/b27b36f12b1594805b52906c482ded47/39253017574.pdf
- http://portaldo.eu/contenuti/upload/file/74950906118.pdf
- http://teenmag.cz/userfiles/file/6290537860.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=retrieving+passwords+on+iphone
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ba16.bin57096584d11f1ce9154e455e14a3eb251e46f096f86c8f65cfc04d29872d4e11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA16 | 10820 bytes |
font_01_sfnt_off0000d2de.bin55d76dbd8c8c6ca666c0601330fc9585c61386ddad02511ab286d74aa01b59f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD2DE | 15912 bytes |
font_02_sfnt_off0000fba1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBA1 | 16792 bytes |
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