MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to compromised WordPress upload directories. The document body is heavily obfuscated, preventing a clear understanding of its direct user-facing content, but the presence of numerous external links suggests a redirection or download attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://wastran.ru/uplcv?utm_term=transitive+verb+exercises+with+answers
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1607802be415a6---10081785496.pdf
- https://aulacvn.com/upload/fck/file/76639580857.pdf
- http://bpsstudio.hu/uploads/90324996534.pdf
- https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/r2a9kge1fg2qvm68gengmsre02/nevupozu.pdf
- https://torbay.ru/images/uploads/file/fakeliwefax.pdf
- https://rh-h1tapi-turbo.com/contents//files/rikedes.pdf
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160871ad29b42a---98892428260.pdf
- http://classicalgardenornaments.com/uplds/file/goronopomidekapawekejudav.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092dc502b2bf---karefagegagerikaro.pdf
- http://aaaexpressac.com/userfiles/file/68531585270.pdf
- http://vimbark.sk/editor_uploads/files/50778411401.pdf
- https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6d48a5ccd---47046482336.pdf
- https://atamergranit.com/userfiles/file/35603161190.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/32bb922a32464c07342d261aa0d3a74b/pusaxutogeledirigovo.pdf
- http://saovietgroup.com/upload/FCK/file/7793920316.pdf
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/hn9ko6clfrcictu7bscl073ldm/josetowinawuva.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b23ff17679f---76959394918.pdf
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e74f71adda---botopegusafezu.pdf
- https://shriayurvednagpur.org/public/ckfinder/userfiles/files/tuxajoti.pdf
- https://csn-alliance.com/data/files/25186199387.pdf
- https://krassimirtaskov.com/userfiles/files/71696118588.pdf
- https://t2sc.me/userfiles/1389614134.pdf
- http://parkhigh65.com/clients/4970/File/xenegowozefedidemomudiner.pdf
- http://residencecarlofelice.com/userfiles/files/vuzejakozilafekosiriku.pdf
- https://everestart.com/images/stories/file/bugudamolewax.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_off0000f57a.bina16cba74895dc4c699d020ce31de748deb52d402042586869f8f8faac63a495a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF57A | 17160 bytes |
font_01_sfnt_off00012220.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12220 | 16792 bytes |
font_02_sfnt_off00013a37.bin20c9c6f219548025ca2a43f24a65512bd1fb4294dd881f9ca9c0304668eead85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A37 | 10520 bytes |
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