MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely serve as a distribution mechanism for phishing content or further malware, as indicated by the ClamAV detection and ML classifier flagging it as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to act as a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://synerhu.ru/uplcv?utm_term=understood+and+acknowledged
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/vh0j1em4kjvosq55pnmcnu17u1/pukesixadep.pdf
- http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5f4447f2ba---79648087714.pdf
- https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16093febb7fd57---xelawage.pdf
- http://yesilderecine.com/admin/editor_resim/file/pupitegepodadanupuzexi.pdf
- http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/1b8036d6916d0e579ebedc8cc8e00d87/sifiwajogimani.pdf
- https://rubenferro.com/userfiles/file/48416849601.pdf
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096269acb165---sufizadudarulanod.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8f18a9f3ee---soveforo.pdf
- http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e1a806d19---joxuxodetapelugeseto.pdf
- http://microlana.com/ckfinder/userfiles/files/tetojobugorajasa.pdf
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/0abdab792b71849fa4ef905079fc4275/pemilepikupurezufo.pdf
- http://araonline.hu/uploads/file/12436663108.pdf
- https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16083387172bad---50782915211.pdf
- http://eortak.com/img/fck_temp/file/puwibedipuxapere.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/96b379ffabc63b9fe67c10784d3ab09c/daranedozuzula.pdf
- http://2ds-creations.fr/userfiles/file/fuxekoraligegijorajef.pdf
- https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/34be7b5e3674b26c32802d7f53c26d5a/90373611398.pdf
- http://eia-edu.com/userfiles/file/piwenekinipofubokeba.pdf
- http://gshosnab.ru/userfiles/file/89240987343.pdf
- https://hasekei.jp/userfiles/file/25271581806.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_off0000f123.bin2dae03b26ed46a747278dc1ed4568f4487d2f50579b18cb53174754ec6b94eaa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF123 | 17496 bytes |
font_01_sfnt_off00011eba.bind47fec014c05c2ba6080553fb9f87f9e65b05be6d32e1149dc356c3106f6094c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EBA | 10640 bytes |
font_02_sfnt_off0001371a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1371A | 16792 bytes |
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