MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links to external PDF files, likely as a distribution mechanism. The embedded URLs point to domains that are likely part of this link farm, aiming to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 5
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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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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=sensation+and+perception+goldstein+9th+edition+free+pdf PDF link annotation
- http://logenamerica.com/userfiles/file/3443662366.pdfIn PDF document text
- http://nousgarage.com/userfiles/file/subimusum.pdfIn PDF document text
- http://apothepharma.com/upload/files/24610398507.pdfIn PDF document text
- https://nikunjfoundation.org/ckfinder/userfiles/files/zapepefukukisiki.pdfIn PDF document text
- https://osakaav.com/userfiles/files/65550771147.pdfIn PDF document text
- https://hoanghaie.com/Images_upload/files/48565270467.pdfIn PDF document text
- https://4of100churchstreet.com/assets/media/files/82169041591.pdfIn PDF document text
- https://gamedunyasi.com/calisma2/files/uploads/bezezodujoguradeku.pdfIn PDF document text
- http://www.gonouvellezelande.com/files/61891982029.pdfIn PDF document text
- http://bresky.cz/res/file/71329861736.pdfIn PDF document text
- https://bizimpin.com/calisma2/files/uploads/zaduvarizerizofus.pdfIn PDF document text
- http://acril.ru/ufiles/files/kefegi.pdfIn PDF document text
- http://dc-42351dc5a6b3.prshots.es/uploads/userfiles/1630495075/files/tidolabolijoloxanaje.pdfIn PDF document text
- http://csp.hu/editor_up/puminimib.pdfIn PDF document text
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/c4f94a62bd2a190d1ad7729cc3f6b1d1/50053876259.pdfIn PDF document text
- https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/bf12f2984aea5d732584fba04288f3f1/jixulelujezi.pdfIn PDF document text
- https://crownprolaw.com/userfiles/Proj_Name/files/59910748328.pdfIn PDF document text
- http://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/25338788203.pdfIn PDF document text
- http://tandartsindex.nl/images/uploads/jemozivi.pdfIn PDF document text
- http://dae-young.kr/upload/fckeditor/file/57937676862.pdfIn PDF document text
- http://www.likoda.com.tw/upload/ckimg/files/51079718131.pdfIn PDF document text
- http://atenngo.com/admin/sites/site/documents/fenosika.pdfIn PDF document text
- http://gmtshipping.com/attachment/file/xewuvo.pdfIn PDF document text
- http://findusafranchise.com/files/files/61811199364.pdfIn PDF document text
- https://razredna-nastava.net/files/43666981651.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_off0000b981.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB981 | 18112 bytes |
SHA-256: 3e7a4bcb10a569bfc7c6cb0006d9e50d0a6e9fe3c7bddcc6d138581b9d881723 |
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font_01_sfnt_off0000e8a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8A3 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000100ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100BA | 11140 bytes |
SHA-256: f0862f2d0cbe0220077fed32d3c4dc74ac85fc7e29ad062b193a72acac8fbb16 |
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