MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1218 Signed Binary Proxy Execution
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to potentially compromised websites or link farms. The heuristic 'SE_SECURITY_BYPASS' indicates the document attempts to instruct the user to disable security software, a common tactic in phishing and malware delivery. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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Security software disable instruction high SE_SECURITY_BYPASSDocument instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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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://archism.ru/uplcv?utm_term=download+wrestlers+fire+pro+ps4 PDF link annotation
- http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/30742727816.pdfIn PDF document text
- http://www.ettermanenterprises.com/ckfinder/userfiles/files/nixuwo.pdfIn PDF document text
- https://menokatea.in/ckfinder/userfiles/files/pulogozupebo.pdfIn PDF document text
- https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161001db33b5f7---zuriseg.pdfIn PDF document text
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/ruat8j9s6tp3dofrll76qvp9ec/98723828042.pdfIn PDF document text
- http://111-orte.de/testarea/cwsCMSlight/media/files/keremoki.pdfIn PDF document text
- https://promise-land.com/upload/file/21311054632.pdfIn PDF document text
- http://www.saletime.gr/admin/fckfiles/file/fapirumilu.pdfIn PDF document text
- http://gerocuki.hu/user/file/posep.pdfIn PDF document text
- http://df-2.de/images/daten/file/jinifogofilakogidar.pdfIn PDF document text
- https://perfecthospitals.org/ckfinder/userfiles/files/48448000766.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/67008565940.pdfIn PDF document text
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d01cb83f30---37843797025.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160869a7d65d65---31770567475.pdfIn PDF document text
- http://ptairsupply.com/userfiles/file/53556321241.pdfIn PDF document text
- https://jewfri.kr/files/image/files/ziwajenalokaditati.pdfIn PDF document text
- http://kovacsoltvaskerites.hu/images/file/pujez.pdfIn PDF document text
- http://myshopgroup.com/userfiles/files/jisofepunemilob.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d80e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD80E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f025.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF025 | 10656 bytes |
SHA-256: 17b1211aa640be25c3c8184ec19a7de9b8cb4ed292d79aeb88740de8d22fa490 |
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font_02_sfnt_off000108be.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108BE | 19024 bytes |
SHA-256: 5f3f2f7287a887b00e0cdf7573dde911a267666e6b7a988fa19f790b0d3d075c |
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