MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest an attempt to distribute malicious content or conduct phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://ryanoomen.nl/uploadimages/files/55049857872.pdf In PDF document text
- http://flyingwedge.com/uploads/assets/file/40334704764.pdfIn PDF document text
- https://cobrawire.com/userfiles/files/23569684518.pdfIn PDF document text
- http://hz-karavany.cz/ckfinder/userfiles/files/satasuzunamu.pdfIn PDF document text
- https://ginecologmuresan.ro/ckfinder/userfiles/files/moxilipixab.pdfIn PDF document text
- https://pypconsultores.mx/userfiles/file/33901221225.pdfIn PDF document text
- http://cerritos.songhakbbq.com/uploads/files/18527246381.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/27bf8efbadbc5cb0d0191a4bff24baa2/bixuposudezigoxipakon.pdfIn PDF document text
- http://sunriverps.com/data/editor/file/87205821102.pdfIn PDF document text
- https://abrasco.org.br/ckfinder/userfiles/files/37954931830.pdfIn PDF document text
- https://jnnjhansi.com/userfiles/file/ninomubabavowibulexamo.pdfIn PDF document text
- http://csc-028.com/userfiles/file/20210906051256_nvlpnn.pdfIn PDF document text
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/d3bcecb76cf1e8212832f02acc0f29f5/34674418816.pdfIn PDF document text
- http://ccforum.kr/uploads/file/1631342734.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133621d870af---33627702963.pdfIn PDF document text
- http://mtjjt.com/2013/upload/article/files/210911050820633290c0our.pdfIn PDF document text
- http://maydemtienvn.com/upload/files/zapedavodob.pdfIn PDF document text
- https://defi128.phpascal.com/userfiles/files/zatuwijelumil.pdfIn PDF document text
- https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/52731629055.pdfIn PDF document text
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/4c3bcbff31363752eaf8235b9996ed04/56510849503.pdfIn PDF document text
- http://nanoservice.cz/upload/file/zubupulitomoguwetubagafor.pdfIn PDF document text
- http://associatedreclaimed.com/userfiles/files/vajawimubalop.pdfIn PDF document text
- http://karmand24.ir/basefile/ehotel724ir/files/45348910215.pdfIn PDF document text
- https://github.com/aliesaassadi/android-mvp-architectureIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=mvp+architecture+android+examplePDF link annotation
- 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_off0000db4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB4C | 18200 bytes |
SHA-256: 0c9c4f49e0418347839dd7f1a026728273d42190f17a144b37f371e5eb8f8a6c |
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font_01_sfnt_off00010a9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A9E | 10872 bytes |
SHA-256: 659790e3a21ff09827e30d75dbe1704ce335faddd34d673f37683ed196ae0068 |
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font_02_sfnt_off00012392.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12392 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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