MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm. The presence of external URI indicators and the overall structure point towards an attempt to redirect users to malicious content or phishing sites.
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://oniceh.ru/uplcv?utm_term=penny%27s+interview+took+place+ielts+listening
- http://avs-market.ru/admin/ckfinder/userfiles/files/4935925173.pdf
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160badbe19ea7d---dosifuxim.pdf
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160b1c8e64819a---95221056735.pdf
- https://mamo-tato.ro/userfiles/file/13272351267.pdf
- http://elitvorota.ru/f/file/gedemukozifirilop.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c549556d849---jelopefatenegilixezub.pdf
- https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/26afc0101baa3d9d0e39d5127f050f4b/savejikajugirudirage.pdf
- https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/3c6770b34ef54211141d75d8fb5b69a2/78049530001.pdf
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb65a9d11a---87315763009.pdf
- http://newgrids.com/userfiles/file/gexanakevozobito.pdf
- https://baohohoanglong.com/userfiles/file/24612732692.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/2f4ce5be527f60925ccf90e9e805bf82/62974313026.pdf
- https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/27318929212.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/36ies4nqmvp0sqspv894eipt26/40478992430.pdf
- https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/eaj7omristtqig6oh0gm2fjcmi/jaregajawuwekopefijifera.pdf
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607222aa3a032---pebopekafu.pdf
- https://minipowerpack.net/upload/files/4802118532.pdf
- http://aliceinformaticasrl.com/user/pages/93701410822.pdf
- http://easytravel63.ru/ckfinder/userfiles/files/lupisametapenezati.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7f9005cef---2560654600.pdf
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/952129791a72ba34ccfdc70030c9ce06/67808011386.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088838a0b5b6---butisumav.pdf
- http://nitexprofi.cz/userfiles/file/433386675.pdf
- https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/21i2hpd73om3hieio498k3g6aa/14164115844.pdf
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a65b1ed9ce5---90383641984.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_off0000ef4c.bin72a5d0a0d226ef6b5883955964e8b24f0c9887784af0ef8c18547ffade82519d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF4C | 17196 bytes |
font_01_sfnt_off00011c46.bin1c37aef413c67164ec8844c042a913f49a3758479c34c1e3176ed63ebf525345 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C46 | 10944 bytes |
font_02_sfnt_off000135fd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135FD | 16792 bytes |
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