MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF 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 compromised WordPress uploads and disposable hosting sites, likely for phishing or malware distribution. The embedded URLs, such as https://cructi.ru/uplcv?utm_term=tubidy+mp3+mp4+music+download+free, are suspicious and contribute to the phishing and malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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://cructi.ru/uplcv?utm_term=tubidy+mp3+mp4+music+download+free PDF link annotation
- http://gavionescodeinsa.com/userfiles/16844200546.pdfIn PDF document text
- https://innovativallatgyogyszer.hu/fileok/file/80283713207.pdfIn PDF document text
- http://bapassamarinda.id/assets/ckfinder/core/connector/php/uploads/files/siwerebal.pdfIn PDF document text
- https://mannerfeltdesignteam.se/ckfinder/userfiles/files/30998283612.pdfIn PDF document text
- http://cy2hand.com/userfiles/wojadixegapex.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-9-2/20210902051915509731.pdfIn PDF document text
- https://cpsguffanti.it/uploads/file/zevogametafe.pdfIn PDF document text
- https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/bemokekinokilikenawojiw.pdfIn PDF document text
- http://nwatchonline.net/userfiles/file/62344603769.pdfIn PDF document text
- http://charontrade.hu/data/file/53044262689.pdfIn PDF document text
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153b09c5389b---19691689956.pdfIn PDF document text
- http://abwlanham.com/uploads/files/44916252901.pdfIn PDF document text
- http://asesorgubernamental.com/images/file/87236510707.pdfIn PDF document text
- http://jmlukanich.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/voxoxin.pdfIn PDF document text
- https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/bdcebffcc9e0f9054996edc87d0436a7/70093490328.pdfIn PDF document text
- https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/e7b25859997771abfc410ecbbc692469/1016312022.pdfIn PDF document text
- http://old.smartplus.pl/ckfinder/userfiles/files/11930133853.pdfIn PDF document text
- https://ietc-oman.com/userfiles/files/74206245370.pdfIn PDF document text
- https://noursportevents.com/wheelmarine/userfiles/file/32586660588.pdfIn PDF document text
- https://bitree.com/ckfinder/userfiles/files/fazutiwozidenafef.pdfIn PDF document text
- https://chennothinterios.com/uploads/file/12459576936.pdfIn PDF document text
- https://bruceautoservice.com/files/file/moretizisituxagufilobobuv.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_off0000b3a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3A9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cbc0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBC0 | 11336 bytes |
SHA-256: cfbe8e7a17a4bfe06b7f93e7ee38d9b1d95c8a468615a4e842a6b3f01c25484a |
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font_02_sfnt_off0000e64b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE64B | 16188 bytes |
SHA-256: 4991cf88bdeac12eb8b22d6ec88169c0c23e2bd402ccd782df4730838ac71f79 |
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