MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with numerous URLs pointing to disposable hosting and compromised CMS uploads, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of many external URIs strongly supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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 https://synerhu.ru/uplcv?utm_term=high+society+german+watch+online PDF link annotation
- http://thephinhmienbac.com/upload/files/xexosaneg.pdfIn PDF document text
- https://citronixdeflection.com/nbloom/fckuploads/file/wadus.pdfIn PDF document text
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/5v7fe02egsr7sv5pa8tfrpcoie/gulomimuzuzasilofod.pdfIn PDF document text
- http://tingchucontrol.com/Uploadfiles/files/mupigirok.pdfIn PDF document text
- http://schule.havonix.com/ckfinder/userfiles/files/12235294638.pdfIn PDF document text
- http://poexali.org/static/image/_u/system/files/puwabejovafuliruroborodi.pdfIn PDF document text
- http://wo-kop.pl/userfiles/file/zewikilavaka.pdfIn PDF document text
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/150a93fcfd40a2b9202e938e97f4addf/butesogubejomegixude.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/jubinedov.pdfIn PDF document text
- http://seoulgreeter.com/userData/board/file/31547156623.pdfIn PDF document text
- http://hanasushi6.com/uploads/files/44468880549.pdfIn PDF document text
- http://sunrui-ti.com/d/files/37038628271.pdfIn PDF document text
- http://redactron.com/userfiles/file/panoxozogi.pdfIn PDF document text
- https://aljuboori.com/userfiles/files/firemalisa.pdfIn PDF document text
- http://hoteldanang.com/uploads/images/files/27987806846.pdfIn PDF document text
- http://clingac.es/d/files/87604841534.pdfIn PDF document text
- https://tootooair.com/FileData/ckfinder/files/20210919_6C80F9E94DCE3C43.pdfIn PDF document text
- http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16145d5a9ec60b---gadufozofesefu.pdfIn PDF document text
- http://www.polni.si/Images/files/belirir.pdfIn PDF document text
- http://leebyunghun.org/new/upload/board/files/62984269397.pdfIn PDF document text
- http://hightopeducation.com/cms_uploaded/file/39881219650.pdfIn PDF document text
- https://amzentransportationindustries.com/admin/imagetemp1/file/vamadiniwebolosazimuk.pdfIn PDF document text
- https://transilvaniafishing.ro/app/webroot/files/userfiles/files/59356749977.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_off0000d4b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4B4 | 18844 bytes |
SHA-256: 58b9bdbfd961c73b69d5aab69fd7888dc7e278d8551355d00de4996e6991e86f |
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font_01_sfnt_off00010566.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10566 | 10868 bytes |
SHA-256: c98bf02d8d55d27ad81ca55c39f864e4128c2b2c0b609466fb14a87095c77465 |
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font_02_sfnt_off00011e63.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E63 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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