MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content or phishing pages. The presence of a 'download' button lure further supports a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://cructi.ru/uplcv?utm_term=book+cover+layout
- https://sitpchemcieszyn.pl/_sitpchem/file/63572485310.pdf
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094659f797df---20009014248.pdf
- http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cb3083759---43060001134.pdf
- http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608b36f900f95---44199205402.pdf
- http://www.ambredore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097a1d1b9f5f---83036361542.pdf
- https://rybczewice.pl/userfiles/file/waxur.pdf
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a67ddda16b8---29668317380.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8814dab4e---26949268503.pdf
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/f7a5dc9cb3cf360da634edd14bd90cb0/80066579139.pdf
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/58d2bb6c8b8b5e12b2b63a6cf2efdfe0/moroxosiwafojiv.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/25e3b2545801fd081665d7b80d40548a/reduzuv.pdf
- http://geodez.com/pliki/file/tewifama.pdf
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd0b061cf9---tatunujid.pdf
- https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/jl0l6d1p8c0511ip2in7852s7d/49045575154.pdf
- http://alemotta.com/resources/original/file/lodaxaxajag.pdf
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5d334879a8---zenoniraxete.pdf
- https://machnik.net/ckfinder/userfiles/files/masopudadowizeduxisox.pdf
- http://saokienviet.com/uploads/image/files/29910296148.pdf
- http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607641fa316f1---losurum.pdf
- https://chameleoncoupons.com/adgprocessing/uploads/files/gajanasisu.pdf
- http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/548b44c9f9e02d818f63d0fdcd16159f/5541231002.pdf
- http://www.armstrongre.com/files/files/rimaladabafusoxeke.pdf
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a33c04431f---53926091196.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_off0000eaad.bind244bae646c8df2d7458a102c920c974138df2baedfc5aa95d4b452593437bf0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAAD | 17248 bytes |
font_01_sfnt_off000117a4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117A4 | 16792 bytes |
font_02_sfnt_off00012fbb.bin4a15c7c90402c6957feb3dabf3a835ea84eb28896785f9b8029e6e46bb90fe53 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FBB | 10284 bytes |
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