MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The sample also exhibits characteristics of a link farm, with multiple URLs pointing to potentially compromised WordPress upload directories. These links likely serve as a distribution mechanism for further malicious content or phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613372495d3c8---zopisadodekef.pdf
- http://hb-hospital.com/file_upload/fck_upfile/file/47475351252.pdf
- http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/161360f94dec9f---70883372089.pdf
- http://bebsulmare.com/userfiles/files/40126885444.pdf
- http://epmresearch.org/userfiles/files/desudosolarilef.pdf
- http://xn--nellieskche-0hb.de/userfiles/file/57874735731.pdf
- http://graficaeformazione.it/userfiles/file/53905110593.pdf
- https://nergizleryapi.com/image/files/28967680525.pdf
- http://aftckwt.com/uploads/file/padoxadigizurawutikasik.pdf
- http://connect-event.fr/ckfinder/userfiles/files/wizinimolijobekoridifumub.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/amii894o11m0l76d10fjq9te63/34269065202.pdf
- https://pastelbuilders.com/userfiles/file/mapegufomumoxoro.pdf
- https://brianspradlin.com/userfiles/file/95177958752.pdf
- https://pcparts.fr/ckfinder/userfiles/files/77708774491.pdf
- http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161318e3041ece---12343127568.pdf
- http://pension-erlkoenig.de/img/editor/file/kigezetisimugex.pdf
- http://hotspot-usa.com/js/upload/files/73842574115.pdf
- http://cancunday.com/travela/img/files/kodorozamigerubemefilof.pdf
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/50d7a04cc51022349af6dbf968c1d33d/85871383324.pdf
- http://linza-market.ru/upload/files/37799079029.pdf
- https://webrekruit.com/php_codes/Scott/VieauAssociates/code/userfiles/file/37597252453.pdf
- https://arhstroi.by/uploads/files/48391222011.pdf
- http://vankouwenenmastop.nl/UserFiles/file/boboferukafusu.pdf
- http://valeneighbors.com/userimages/gojakakokosajojod.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=the+hunter+mod+apk
- 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_off0000d36d.bin0eaf6fe239ccbebdfa1e5dd66fe624952e406fb3f5d06e698e1bad7b84f83323 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD36D | 10504 bytes |
font_01_sfnt_off0000eb19.bin2f455436d94036c48a562e42ef6af0696d12d5aacc1c642bf56c8b54cd9bdcb5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB19 | 18024 bytes |
font_02_sfnt_off00011a0b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A0B | 16792 bytes |
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