MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The PDF contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary attack pattern involves luring users through a malicious document, likely via spearphishing, to these compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160e626bb4237a---luvalazipibenuwifokewugef.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607800e5ab288---bipunagugusizafolugamepo.pdf
- http://koryosushi.com/uploads/files/9130950716.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16085600b4d4f5---femevapobizij.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978c174afe2---88831679809.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b29cf7e6b6---18409016385.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ff0001c883f---raxajovilosanoxamuduzom.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/7h6nl6a2cm0t15m6oldlgvib32/21273494628.pdf
- http://yetisirkaucuk.com/firma/files/muxez.pdf
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4e3453732---38583316514.pdf
- https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/45fb792c740b38eec52c9be867a59b24/7906210108.pdf
- http://montagnobozzone.it/userfiles/files/nifegaxoropirafabefituf.pdf
- https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/fd507f9d83d4500c03a64315a2130915/kexexuvanorosamiwato.pdf
- http://cerezolorente.com/files/cerezolorente/_repo/file/kapebumabamiwepopof.pdf
- https://planet-for-events.de/userfiles/file/pedada.pdf
- http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7654cad08---29252422197.pdf
- http://nature-revive.org/files/file/zagibirelosinokilekase.pdf
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/i5mkh95o1vrusr23iks6d79284/86226536822.pdf
- http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b560813e129---soxujoretuvuvomirovowow.pdf
- https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/du6u4o9fu76q2rjh4u8hg6fhmo/4002724578.pdf
- https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d55fc0a1682---87914746229.pdf
- http://poiskvod.ru/images/file/duzexeromikuta.pdf
- http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609f72503e3ef---18474027480.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075f18f8e5a1---60775867277.pdf
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b64e9c6dc4c---tivabiwudoferevezas.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=ejercicios+de+analogias+para+ni%C3%B1os+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_off0000dd2c.bin8473e716543e4d5ce886cc3e2d5bab1bf1321afb998efd5fded3f78964164798 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD2C | 17584 bytes |
font_01_sfnt_off000109cb.bina6c8c61e5b0a4e5321d9a75661c51b88f13d15027e7da2103155fceb48ec921a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109CB | 11016 bytes |
font_02_sfnt_off000122f7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122F7 | 16792 bytes |
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