MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous external URIs pointing to compromised WordPress uploads and disposable hosting, likely to redirect users to malicious content. The primary attack pattern involves luring users through a document that, while not containing readable text, embeds multiple links designed for exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://inwebjor.ru/uplcv?utm_term=words+with+the+sound+ir
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607785e4431f9---8249559307.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/d0c0730c75a98810e36fde34892cb9db/6764164242.pdf
- http://eurogeographyjournal.eu/admin/fckfiles/file/dajaxexo.pdf
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080e4cb29cd1---rizubuwofarubazetiwuwew.pdf
- http://cestovni-postylka.eu/userfiles/file/79846308468.pdf
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/ae9d238e5828b95d0ef10b7905e9b4fa/97075718280.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/c417429da5f48e1f67fb377c3fad200b/55353595337.pdf
- https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/fg2m6qvli6temmr1pkt10c1o67/komimof.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070d112551e3---94692089355.pdf
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf2c274a2b---30124527424.pdf
- http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2cd7e3c95a---49503892520.pdf
- http://alnadaoil.com/userfiles/file/gojurodakomawelosi.pdf
- http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdaabc8f46---9167493301.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb23ed2d42---tajibipofekak.pdf
- https://jnvhardoi.org/ckfinder/userfiles/files/995809911.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/73684b7de16d0c974c9eb7ceda0097b2/jezuxalabudigidimagaze.pdf
- https://parklanehotel.asia/userfiles/file/71993940100.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160752cf2f0908---gutotolege.pdf
- https://ascinfratech.com/clientprojects/trading/file/mixedediv.pdf
- https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/ac0bf6157916c097e3d8d7c82586eeaf/63784103497.pdf
- https://menu2uplus.com/images/file/bexif.pdf
- https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/ric486vb2p4c0hrtbdfrpl8dsf/28072814793.pdf
- http://fotofolliasanlazzaro.it/userfiles/files/41164064237.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_off0000c72f.bin8e9d9b7b9eeff21237e0a58431de2ed2ee612a83fd3ad9a5b0ab5bc0abc65668 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC72F | 10316 bytes |
font_01_sfnt_off0000de72.bina1a7583286bfe03a14c20fd5f9dda89641a8541f616bc7fae2e4b3098a43231c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE72 | 16692 bytes |
font_02_sfnt_off0001095a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1095A | 16792 bytes |
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