MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external URIs pointing to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving the exploitation of PDF vulnerabilities to execute further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://queure.ru/uplcv?utm_term=play+store+application+downloading
- http://lso-msm.com/userfiles/file/jawegefaduxoj.pdf
- http://bsbcarpet.com/userfiles/file/xaxina.pdf
- http://studiolegalebisantis.it/userfiles/files/wupanitixegibuwi.pdf
- https://hram-uspeniya.ru/ckfinder/userfiles/files/30836546195.pdf
- https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/qupl6beip5akjm2jdkbmnhifb5/zumaxa.pdf
- http://technoauto.jp/js/upload/files/kinorabemizuxufexav.pdf
- https://drnanemilk.com/tctt/sites/aaa/file/47060450533.pdf
- https://adasms.fr/userfiles/file/budogi.pdf
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161427b725c90a---51526060888.pdf
- http://brezov-gaj.si/uporabnik/file/weramaxosek.pdf
- http://nhatminhtrading.vn/app/webroot/uploads/files/tametezalo.pdf
- http://lapempi.nl/ckfinder/userfiles/files/82727430096.pdf
- http://poiskvod.ru/images/file/vatabusimisererumifezoj.pdf
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b06b78d6a---70987043292.pdf
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/0cb04c34ddcc1905c42471ec2bf35aac/ruwokavobukasolon.pdf
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16142d0644a139---norerizofaluxofufofode.pdf
- https://aymexco.eu/ckfinder/userfiles/files/99894111245.pdf
- https://heks-tech.com/app/webroot/userfiles/files/lelugokusotisuviwoz.pdf
- http://tetobox-budapest.hu/uploads/files/wojapiraturefigixogob.pdf
- http://zoncmswebsitebeheer.nl/files/editor/file/19400688942.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f2da38a43d---nuxivujabopiwajoz.pdf
- http://proreferee.ru/uploads/ckfinder/files/tubevedezevaximovafan.pdf
- https://officialbacknumber.com/editor_up/79386007807.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_off0000ce3d.bin3112823bba22baa97e514f5df7c83dab0455cd7e51fef4ddffa74e5b96c08c07 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE3D | 16412 bytes |
font_01_sfnt_off0000f84e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF84E | 16792 bytes |
font_02_sfnt_off00011065.bin45766c0d1ba162c60aea892d7ab94c609d9fa2e1ab7cde8d738808e2c2d67466 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11065 | 10892 bytes |
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