MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were directly extracted, the structure and embedded URLs are indicative of a phishing or malicious redirection scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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=free+printable+sight+word+worksheets+for+first+grade PDF link annotation
- http://m2mus.ca/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/nigoxizu.pdfIn PDF document text
- http://vidol.nl/userfiles/file/44886934361.pdfIn PDF document text
- http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f2e2018e8---juruwamezefasopomu.pdfIn PDF document text
- https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/8f04f54a3bc7641ee9793642331fa7e1/39813682129.pdfIn PDF document text
- http://hotechike.com/files/files/zezekupojogoxibe.pdfIn PDF document text
- http://shoreluxurylimos.com/userfiles/files/17894874784.pdfIn PDF document text
- http://cukiernia-waltar.pl/qcms/userfiles/file/ruxetunid.pdfIn PDF document text
- http://bakoca.hu/files/file/85165810609.pdfIn PDF document text
- http://hoteldazegliotorino.com/userfiles/files/pupuduloj.pdfIn PDF document text
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/e7e79712498f38bcba34bd4e88afeb0d/wudopori.pdfIn PDF document text
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1611b89f94ebb1---gomuzagimilewi.pdfIn PDF document text
- http://thessalonikiflights.com/files/files/mesagapugubuja.pdfIn PDF document text
- http://toptoptraining.ru/img/upload/file/36089645724.pdfIn PDF document text
- https://amadesafar.ir/basefile/amadesafarir/files/32211318605.pdfIn PDF document text
- http://dui-antidote.com/images/userfiles/file/15339575685.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/rozibupudesa.pdfIn PDF document text
- http://cngwalk.com/fckeditor/userfiles/image/soweju.pdfIn PDF document text
- https://gulfsupremesa.com/ckfinder/userfiles/files/miwifujusizalizedumirig.pdfIn PDF document text
- https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d11bab475---42567868823.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/23t560acus86gitlitca7io91a/mexenitizatowonexudupe.pdfIn PDF document text
- https://berbagiangka.com/contents//files/4118212759.pdfIn PDF document text
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/6ba74b0609ffac2dfacf787dbdd4200d/nemurekoto.pdfIn PDF document text
- http://udmvdpo.ru/images/files/lakeze.pdfIn PDF document text
- http://www.77ice.com/upload/files/3067833898.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_off0000d908.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD908 | 17572 bytes |
SHA-256: 2c2213cb2d64a2bfb5367d81a0564dd660d6f2ecaebda40eb1b809d103f84052 |
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font_01_sfnt_off00010637.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10637 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011e4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E4E | 11072 bytes |
SHA-256: 3bb9659e0a72976d882ae3e9347d82e8c2570b515b1a6dc1053cd6af1d0b3145 |
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