MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The 'SE_BROWSER_INSTALL_LURE' heuristic strongly suggests the document is designed to trick the user into installing malicious software by posing as a necessary browser update or extension. While no scripts were directly extracted, the presence of numerous embedded URLs, many hosted on compromised or disposable domains, points to a phishing or malware distribution scheme. The document's structure and embedded links are consistent with a social engineering attack aimed at initial compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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 http://valsadindustries.com/userfiles/file/86534728407.pdf
- https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/psi5hdbopt2kkv8tlvllfsmvml/nigexivawagaveteme.pdf
- https://history.tlshaa.org.tw/ckfinder/userfiles/files/47458206358.pdf
- http://paradoxine.com/upload/files/95276535710.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16137e0a990331---zumutebu.pdf
- https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614c54b8886e4---24818747300.pdf
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/148c7bb67d2fe4fcd88a1b33f770f776/66266463131.pdf
- http://wingmanresearch.com/userfiles/files/82301061238.pdf
- https://ddshower.com/ckfinder/userfiles/files/48492363096.pdf
- http://lifecare4all.com/upload/files/73752690358.pdf
- https://destockbaby.com/ckfinder/userfiles/files/tibegegez.pdf
- http://dieterheich.de/images/uploads/file/rabijefazerij.pdf
- http://aeon-dev.com/uploads/files/202109190258422498.pdf
- http://builderall.info/userfiles/file/xedonanolazekarux.pdf
- https://phucatgarment.com.vn/ckfinder/userfiles/files/25804442842.pdf
- https://millersexpress.com/userfiles/file/sesuna.pdf
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161427c851af04---10032904925.pdf
- http://asu78.ru/userfiles/file/tepixudelexisavinazew.pdf
- https://lose-weight.tw/upload/files/3846373987.pdf
- http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139bb6e52788---28013353723.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/161418e897ffef---60412275663.pdf
- http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///97458795385.pdf
- http://danangsculpture.com/uploads/image/files/datotuxotadisirokomilet.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=copy+paste+emojis+iphone
- https://easyown.ddproperty.com/datas/files/zimudagi.pdf
- 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_off0000d0dc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0DC | 16792 bytes |
font_01_sfnt_off0000e8f3.bin82f2fbb80f3a9bed237f1e9fb11dc7375491c7d777435c09a600df78042eb3bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8F3 | 10644 bytes |
font_02_sfnt_off0001012e.bin49be28c909d7eb36760cee4d48d41b57f0c812c1cb4235aca487203ad742d1eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1012E | 17060 bytes |
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