MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The sample was detected as a malicious PDF by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware delivery attempt. Heuristics indicate it functions as a link farm and employs a social-engineering lure to prompt the user to install a browser extension or update. This suggests an attempt to compromise the user's system or steal credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://rsun.pro/admin/ckfinder/userfiles/files/40163354501.pdf
- https://www.tunnel.de/files/uploaded/file/kizafokaz.pdf
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a38d050aa7c---95569659194.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607343f8a80bc---gubevasoj.pdf
- http://hoteldazegliotorino.com/userfiles/files/2632438831.pdf
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160872d1c63602---finerodiginumum.pdf
- https://agentcctv.com/userfiles/file/zuruxiwufukuvo.pdf
- http://sunarfactory.com/userfiles/files/10357305781.pdf
- https://airshow-bg.com/file/biwuvekawi.pdf
- http://edwardnugent.com/userfiles/files/fosidewumetede.pdf
- http://jakebenmd.com/clients/0/0e/0eef9d569b11303d075d19626cc6f958/File/jiwadabulotakiz.pdf
- http://poorclarescork.ie/images/24456266790.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/28602c0a75fe7b9ea0268ef3908efe40/34157312980.pdf
- https://ncsccalgary.com/userfiles/files/jokuvetigurel.pdf
- http://kondicionery-vidnoe.ru/upload_picture/file/72960142469.pdf
- https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/9a77a35e6f03bda3686fdceb93a5312b/51020745633.pdf
- https://psiakocky-potisk.cz/webpagebuilder/ckfinder/userfiles/files/72791155135.pdf
- https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160897c1716c9e---82020968802.pdf
- http://controldellaves.com/app/webroot/arxius/file/laxek.pdf
- http://giasuthienphuc.com/Images_upload/files/zinazudijunorosax.pdf
- http://www.photonics-science.com/ckfinder/userfiles/files/biraniwokukonojuzuzak.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3aac5c7591---mugarub.pdf
- http://www.vinoplaza.nl/img/upload/files/wekiw.pdf
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/eg0t710nuelti4votel67ri0te/xozipogifijubokisimazof.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=how+to+search+gmail+address+by+name
- 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_off00010772.binc1c567ceb029d0d6ee3e37df5142cdac020d37f5f52f4a37c6836fcb66b693c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10772 | 17544 bytes |
font_01_sfnt_off000135b2.bin1e51d27b2b4c413080705e50ddac9a84b48edf98b485905667969460ff3a019c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135B2 | 11148 bytes |
font_02_sfnt_off00014f67.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F67 | 16792 bytes |
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