MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF document that employs a social engineering tactic by presenting a lure to install a browser extension or update. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download and execution of a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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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 https://garglob.ru/uplcv?utm_term=how+to+screenshot+on+android
- https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/69ff07985d560e64cf1429a013715536/20584952548.pdf
- http://mertcelikkapi.com/userfiles/file/76599707651.pdf
- https://franchisefarm.franchiseharbor.com/files/files/41345211582.pdf
- http://chayka-svg.ru/files/teminibosal.pdf
- https://fpcofmacon.com/nbloom/fckuploads/file/28026762776.pdf
- http://aaaexpressheating.com/userfiles/file/33813629471.pdf
- http://jplus-ag.com/upload/files/BodyFile__613096B35B63A.pdf
- https://soudurelauziere.com/upload/editor/file/91013604659.pdf
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/161367323497d1---pevujimusujigawapuga.pdf
- http://cocoal.com/uploads/file/28650637724.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141d12eb60d0---mogizupanitaxubuvunut.pdf
- http://duszek-lasu.pl/userfiles/file/81540333231.pdf
- http://massarentearchitettura.com/userfiles/files/terisifipetota.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/9583f7bd1171377e434d4ce4f48c33be/zolafepabemuxakaxora.pdf
- http://sva-jeanroze.com/xmedia/file/tovubuxudawex.pdf
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141bccb55994---4823125715.pdf
- http://sten.kr/club/data/userfiles/file/20210911202424.pdf
- http://vertracapital.com/uploads/files/vamowexajatexite.pdf
- http://bikaji.zohukum.com/ckfinder/userfiles/files/11602535223.pdf
- http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139a3dcd6a09---40802091431.pdf
- http://jmyhship.com/uploadfile/files/getuletenime.pdf
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/29386724421.pdf
- http://enotecagaribaldi.it/userfiles/files/38519615007.pdf
- http://westernstudioservice.com/admin/userfiles/file/76684134499.pdf
- http://svarovani-tig.cz/userfiles/file/95161824148.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_off0000e41c.binc8cec9f21faf11159554e0c636d0d02874e33a6c471499424a2fa2fea8ac737b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE41C | 10496 bytes |
font_01_sfnt_off0000fbf2.bin7eac9ba4f2f46c016b640ee100931a8665256b33ae2ca80118ecef4517ba5475 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBF2 | 19568 bytes |
font_02_sfnt_off00012e37.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E37 | 16792 bytes |
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