MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://chcial.ru/uplcv?utm_term=redmi+note+9+pro+max+memory+card+support PDF link annotation
- http://web5gstore.com/Files/files/52959295285.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/75164c701d41ccc20487c555531cb4f5/37160866289.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613432ee36382---60758972983.pdfIn PDF document text
- https://anmimar.com/royal/userfiles/file/kejalereg.pdfIn PDF document text
- http://inbjnews.com/data/cheditor/0603/files/61962432652.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139913faa9ea---36722746787.pdfIn PDF document text
- https://posetili.ru/userfiles/file/wepetijobifanotubef.pdfIn PDF document text
- http://3mfa.com/images/editor/files/59633756149.pdfIn PDF document text
- http://puzynowska-kancelaria.com/userfiles/file/rebavov.pdfIn PDF document text
- https://luxurybaths.marblobaths.ph/app/webroot/img/files/monopetur.pdfIn PDF document text
- http://hferrynetworks.com/FileData/ckfinder/files/20210908_F1884B9EAB729B75.pdfIn PDF document text
- http://irinabailey.com/upload/files/nifapimufodusa.pdfIn PDF document text
- https://mangalargalux.com.br/ckfinder/userfiles/files/rijezazusebegukitugasirud.pdfIn PDF document text
- https://ystechpro.com/nbloom/fckuploads/file/temavunurasibota.pdfIn PDF document text
- http://sten.kr/club/data/userfiles/file/20210910100543.pdfIn PDF document text
- http://logopeda-empatia.pl/content/file/nivawaralevunibufuzet.pdfIn PDF document text
- http://prvugkh.ru/uploads/files/gijofowixegowanene.pdfIn PDF document text
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340f99786a1---48438948909.pdfIn PDF document text
- http://gelateriacool.it/userfiles/files/40639369793.pdfIn PDF document text
- https://mimpisiluman.com/contents/files/lekakupenanises.pdfIn PDF document text
- http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/rudiwoni.pdfIn PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613678377413c---boxepuvuwobobawedipesi.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_off0000fabc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFABC | 11156 bytes |
SHA-256: 4d1221b33029ea463bd1a25779cf03f248a779f9d379c7e0a18692d6505ad504 |
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font_01_sfnt_off000114de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114DE | 19696 bytes |
SHA-256: fbfe298dc53a4ffce176a62f2e64972bb9940e8eb5402941627c86add1ef4858 |
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font_02_sfnt_off000148d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x148D1 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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