MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detected this as a phishing trojan, and ML classifiers also flagged it as malicious. The embedded URLs suggest a phishing or malware distribution campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://coretry.ru/uplcv?utm_term=composite+numbers+between+10+and+20
- https://alternatifhirdavat.com/upload/ckfinder/files/todomerolagifigisatetomix.pdf
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613df3b555d59---19857397187.pdf
- http://www.peretprod.ro/content-images/file/29174138801.pdf
- http://www.hz-kontejnery.cz/ckfinder/userfiles/files/vumidisowudab.pdf
- https://locktactyuma.com/ckfinder/userfiles/files/73681730846.pdf
- http://puisan.ru/uploads/file/befupe.pdf
- http://www.gobarging.com/uploads/textareas/file/67685765336.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb29335db4---lomigexejexozaru.pdf
- http://bwemfjhjk.friend-match.com/upload/files/vigoxagexosufike.pdf
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613e40ef9f6a7---fefigobo.pdf
- http://www.yemany.com/yemfiles/files/lefezibaguzoraledovizozi.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/ca80d768b80392e2ec78982b4448a1de/66214690586.pdf
- https://trade.inter-ural.ru/ckfinder/userfiles/files/xagukokuxupupox.pdf
- https://newoptic.sas-global.mn/uploads/files/wezexeloto.pdf
- http://ecohort.com/userfiles/files/lawopebuf.pdf
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d04fca90944b661c6d749e13b52aa67a/masizamipaleg.pdf
- http://losangeles.songhakbbq.com/uploads/files/72351209453.pdf
- http://madiran-cruduparadis.fr/ckfinder/userfiles/files/65813630043.pdf
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16147ac2735809---ginitetaditon.pdf
- http://nhactheducthammy.com/upload/files/vazijumibuwadugores.pdf
- http://soluzionebenessere.eu/userfiles/files/gakasapodimonokowof.pdf
- https://giridhareye.org/ckfinder/userfiles/files/luseropadaga.pdf
- https://eliteplacementagency.com/uploads/files/67902496195.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_off0000af43.bin5a954b48a9cb921df452509a38adbf307f205d997a934bbb70e1e2b6ef18c9e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF43 | 11160 bytes |
font_01_sfnt_off0000c941.binc82c2dacd7da3ddd320f1fdcfbafa9e3a113e275571bf72b3321136be91c0117 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC941 | 15312 bytes |
font_02_sfnt_off0000f009.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF009 | 16792 bytes |
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