MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple compromised websites, many of which are hosted on WordPress installations using vulnerable plugins like 'formcraft' and 'super-forms'. These links likely lead to phishing pages or further malware downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a7fabb53f.pdf
- https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/8dede521b43444053f2dec1c7aff637d/96301611779.pdf
- https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/90e3d77c4f723a8a229e5ef691eff3c4/jumexefid.pdf
- http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0378ac0b9a---bemuzofib.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7a4b8acaf3---jevimiro.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/ace28f283849846668b8920ecf285dd5/16086861692.pdf
- http://barudan.hk/UploadFile/file/20210626074931812.pdf
- https://soudurelausiere.ca/upload/editor/file/37178516072.pdf
- https://djennebeads.com/nbloom/fckuploads/file/wimiziboge.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/mimnt0f00f902vptivu4oj0230/22289155241.pdf
- http://simkoongschool.com/uploads/editer/files/nidawuzavodovero.pdf
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160875564bd748---mobimafes.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/p5ffhb5kchdujnkfn2d2omrhk3/xolazuzitutudobowiliw.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac6eeb23ac6---7046807313.pdf
- https://mamo-tato.ro/userfiles/file/napesuzutotogalevave.pdf
- https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/jetil.pdf
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/ae17a9b928c1e60917e99727751ded8e/4480605841.pdf
- http://acpiindia.com/userfiles/file/5989773695.pdf
- https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/95cd3588c43b814137178945b86f1c6e/gidadujemolekazapex.pdf
- https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/423bf66169b89737ed11b59794e31711/nefupefi.pdf
- http://industrialdevices.in/uploads/72841529597.pdf
- http://abogadosaguilar.com/ckfinder/userfiles/files/7502417866.pdf
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16095bd9e3fca8---kusevawir.pdf
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/j7nq1b1t30mefbd28uqkbqh0i6/sefil.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1608019d6ebe03---25770986927.pdf
- https://hanurichurch.org/ckfinder/userfiles/files/mekenojapopafe.pdf
- http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a11163e168---26122149265.pdf
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607438bd1d660---49719629343.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=recycle+bin+in+file+manager
- 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_off0000f607.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF607 | 16792 bytes |
font_01_sfnt_off00010e1e.binbc8da9e98da45e9336d8c40ac50fa0944332c944296a45951a8c2bb328556423 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E1E | 10592 bytes |
font_02_sfnt_off00012639.bin00f17642955c07006d332d03567113969e1a3a7b8aba17270c53e37f26d2c8bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12639 | 16792 bytes |
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