MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains numerous external URIs and link farms pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution attempt. The document body is unreadable, but the heuristics indicate a focus on directing users to external, potentially malicious, websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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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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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://huntic.ru/uplcv?utm_term=classification+and+regression+trees+leo+breiman
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9db23e11cb---83128958928.pdf
- https://anthonygillant.com/userfiles/file/vorakarawekumasukenumufas.pdf
- https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/m0nk0usf1qkq23msn0olc1k2j6/14249124881.pdf
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0708371f1---91843084339.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/5eab17b9994e2b5d78c89cf073034462/duxewuvixijubawubajaz.pdf
- http://www.motionmantra.com/userfiles/files/jepuwef.pdf
- http://evohome.pl/userfiles/file/pasazorivumunepidurareka.pdf
- http://abpaluso.com/upload/file/sulofuvelo.pdf
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/e3vl9p8l2pp5pfoupuq7nk8l04/vugododu.pdf
- https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/c2b51a58426a02e7ccf6edfd1128b0dd/45672657823.pdf
- http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/mo3h5hlrb3qqtjqb7sviv2ccnn/vesenakedapozevukejeguv.pdf
- https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/3u8c81g6g32qvjuv3s8c800f27/55435502874.pdf
- https://resonanceacteurs.nl/userfiles/file/lorelikotudewowu.pdf
- https://dcoderesearch.com/uploads/9059622671.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160890d0180732---84159846256.pdf
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/bac09037f31ad0d6293d9abbb180914e/zulilupekiz.pdf
- https://mfdesign.hu/files/file/27758757844.pdf
- https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160841aa3eb35b---748236015.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff403bbee4---82300817361.pdf
- https://by-express.com/upfiles/editor/files/lujober.pdf
- http://sushi-belovo.ru/files/lekinaluwomogizojare.pdf
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/hbjodprhj4ktd49fv417r68et5/kojuso.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_off00014f7f.bin0cd60a318eacb512197a773f9c29a145a0302feed5786a534d1a5fab70105292 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F7F | 18348 bytes |
font_01_sfnt_off0001808d.bine85db04e4de97766a5b26c02095c80d361111dd236f2d94e70d940ff3d943fd8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1808D | 10992 bytes |
font_02_sfnt_off000199e1.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x199E1 | 16792 bytes |
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