MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and a link farm pointing to multiple PDF files hosted on various domains, some of which are identified as compromised CMS uploads or disposable hosting. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The embedded JavaScript is likely used to facilitate the download or execution of a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 8
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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 http://riggi.ru/userfiles/file/85418269112.pdf
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/ae39f47fac35460c2c630c0b9f9220d0/42741487475.pdf
- http://www.jokilaaksonratsastajat.fi/file/26948708750.pdf
- https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/moborekujop.pdf
- https://jairdefreitas.com/ckfinder/userfiles/files/82174932083.pdf
- http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614170c9571e0---jedobebixewirebe.pdf
- http://leebyenghun.com/new/upload/board/files/88625104767.pdf
- https://pass-eco-energies.com/ckfinder/userfiles/files/86641388084.pdf
- https://eletmodguru.hu/files/files/81825993843.pdf
- http://amindoost.ir/images/upload/files/45802562607.pdf
- http://agrobud.net/uploaded/file/rixuwodirozawam.pdf
- http://etkenkalip.com/files/jasidalumokesesariwujunu.pdf
- http://ayurveda-shiatsu-qigong-nice.com/upload/files/jozofibuzolojafov.pdf
- http://yujinpharma.com/upload/files/zajoven.pdf
- http://szentdorottyapatika.hu/files/17658651240.pdf
- http://restauraceeverest.cz/userfiles/file/6462733803.pdf
- http://galsabino.it/userfiles/files/zojobuwazebum.pdf
- http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///90122519031.pdf
- http://nscenter.cn/upload/files/legogujotanukem.pdf
- http://www.perchegouet.com/ckfinder/userfiles/files/77013646886.pdf
- http://cissi.it/userfiles/files/wovexazatizatirajo.pdf
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/161323df49584a---30579008497.pdf
- https://10s317.com/uploads/files/202109131706519928.pdf
- http://autostyle-japan.com/js/upload/files/27314861549.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=windows+7+loader+rar
- 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_off0000d848.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD848 | 16792 bytes |
font_01_sfnt_off0000f05a.bin1298725e27f5ed15ecdbbe2fa0b794209386b7e6b41b176908a89b4b71563752 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF05A | 17352 bytes |
font_02_sfnt_off00011d70.bin8f9c05d3a661da7bfa1c22fb4099d298e80ce5e74ac82e746f0e4289f0efe2e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D70 | 10272 bytes |
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