MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or are part of a link farm hosted on disposable domains. The primary function appears to be redirecting users to external sites, potentially for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://pistant.ru/uplcv?utm_term=instagram+viewer+online+private
- https://speedwayinfo.hu/uploads/file/tiloroguzozasezevikexa.pdf
- https://noelex22.org/userfiles/file/74745025398.pdf
- http://rotarybrescello.it/userfiles/files/vizusit.pdf
- http://amsuatrust.org/survey/userfiles/files/binabo.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/20oqkjlpnpk664vv61q5qf5s87/zerobofisaxolumisevezadi.pdf
- http://rutka.pl/media/upload/files/dc0b8611b69f4a8a362593c8c7ec286a.pdf
- http://tahyuh.com/uploads/files/202109192028147874.pdf
- http://bright-mineral.com/uploadfile/file/2021091807442543.pdf
- http://shinhwajudan.com/userData/board/file/zamukanolemogapa.pdf
- http://srs-budapest.hu/uploads/files/tumazenulokiboti.pdf
- http://ahkjt.com/upfile/file/31892849328.pdf
- https://gencerenerji.com/resimler/files/94098504593.pdf
- http://lasermedia.cn/userfiles/file/47202286853.pdf
- http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/gutolegumivuk.pdf
- https://tradingphrases.net/userfiles/files/xasexudaraz.pdf
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/80d50e1cd21dd29e18160208c9da4ccc/jizodaxegodilefoboziv.pdf
- https://iwanbim.com/userfiles/files/risexekemegomimoxupiluza.pdf
- http://aedelsur.com/contenido/files/13656615038.pdf
- http://www.psyforyou.nl/upload/fckeditor/file/pakogufixidu.pdf
- https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161444e9d762be---merukiduwagidu.pdf
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614ef453c673c---danelenotibapiwanubanisub.pdf
- http://thamcohoaian.com/webroot/img/files/26077175762.pdf
- http://mos-craciun-inchiriere.ro/fckfiles/file/pomakakozufobum.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_off0000b31c.bin3058022b55b176b2ff2c2800bf58643b54d1a448bb577783bea6eadc5fe7daaa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB31C | 15276 bytes |
font_01_sfnt_off0000d9a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9A4 | 16792 bytes |
font_02_sfnt_off0000f1bb.bin70e96dc819a3b116a73ca84f0a51590de532cd2da6169988b0f74a8e93009e60 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1BB | 10696 bytes |
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