MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised CMS platforms. The presence of 'utm_term' parameters in some URLs suggests a phishing or social engineering attempt to lure users into clicking on these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9916
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://irlanc.ru/uplcv?utm_term=reading+interest+survey+middle+school+pdf
- http://eaas-journal.org/survey/userfiles/files/jureziledez.pdf
- https://kodcomputers.ro/2664/uploads/57209177446.pdf
- https://xn--z4qq44i.xn--kpry57d/upload/actfiles/60858134986.pdf
- https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfde3b8a8e2---nefanekisajepalazonono.pdf
- https://peptidturkiye.com/ckfinder/userfiles/files/57542916701.pdf
- https://citytrafik.nu/images/file/44027659078.pdf
- http://chiangmai-clean.com/user_img/files/52578631083.pdf
- http://sylvianapoles.com/clients/e/e6/e63d90d46a840f0b3195f531cec11f6e/File/gapiwokugigelun.pdf
- https://laetitiabernard.fr/images/file/vakiva.pdf
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607714d32f0b8---55922802975.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/978d055552619b5749b967f01b140219/bozulubemopugulo.pdf
- https://dptech.vn/uploads/files/xalewonerupizire.pdf
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f57a361073---babor.pdf
- https://shen-su.eu/gfx/userfiles/files/71970280004.pdf
- http://seyrimerdin.com/userfiles/file/nabazoganunoveri.pdf
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a63fdfc7b---babuto.pdf
- http://vo23.ru/upload/file/35070746384.pdf
- https://zevkotodoseme.com/upload/ckfinder/files/67735608067.pdf
- http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a468eef2c3f---losivasokidodadi.pdf
- http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2c0401b7c---titirolajimasagowivuzepen.pdf
- http://bestofbeer.ru/ckfinder/userfiles/files/30167483914.pdf
- https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/c2820e4dd5b5f727c25d88f1fd5e9e72/77933794561.pdf
- http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/jf13a73koup3e7s1593cb98ms0/vezegemubaduja.pdf
- https://abrasco.org.br/ckfinder/userfiles/files/15203028981.pdf
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f560.binc7bc4375456c7627b5706741ea65affd688996d84c44223fdb6573b9f93f99fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF560 | 11392 bytes |
font_01_sfnt_off00010fdc.bind8ec2ce4b691c9f1df83b1b3a7cd0b24759bcbaf40cdf898170bfc8bdd5b519b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FDC | 17068 bytes |
font_02_sfnt_off00013c3e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C3E | 16792 bytes |
font_03_sfnt_off0001544f.bin6765b23bd5bb06b0b1af0b092dddc52ced5784d577553baf02d3007c82a340b0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1544F | 17120 bytes |
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