MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The presence of numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, strongly suggests a phishing or malware distribution campaign. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the overall structure and heuristic firings indicate a malicious intent to redirect users to external, potentially harmful, sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://chcial.ru/uplcv?utm_term=how+to+cast+from+chrome+on+phone PDF link annotation
- http://fszhenjia.com/upfolder/e/files/20210914081842.pdfIn PDF document text
- http://www.examnotice.in/uploads/files/getekorawufaw.pdfIn PDF document text
- http://demenagements-remond.fr/userfiles/file/20210903225103.pdfIn PDF document text
- http://saydersan.com/firma/files/tatobafumoleladebizun.pdfIn PDF document text
- http://filipdegreef.be/uploads/files/35640867991.pdfIn PDF document text
- https://billard-hauri.ch/userfiles/file/14574605793.pdfIn PDF document text
- https://attack.lt/images/files/lidela.pdfIn PDF document text
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161405b83e6e5d---16082237741.pdfIn PDF document text
- https://tonthephunglan.vn/upload/files/46708665053.pdfIn PDF document text
- http://santamariamikado.com/uploads/files/fopavom.pdfIn PDF document text
- http://www.taimaobi.com/admin/ckfinder/userfiles/files/6441719104.pdfIn PDF document text
- http://ipea.kr/userData/board/file/zelopira.pdfIn PDF document text
- http://zeshengtecphar.com/UploadFiles/FCKeditor/20210916053055.pdfIn PDF document text
- https://bdprescription.com/ci/userfiles/files/bufitunize.pdfIn PDF document text
- http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/wadej.pdfIn PDF document text
- http://homokkepek.hu/editor_up/kategev.pdfIn PDF document text
- https://parisnordmedical.fr/docs/file/87516381593.pdfIn PDF document text
- http://imcborivali.org/userfiles/file/xopifobuzinizubu.pdfIn PDF document text
- https://noihoithanhtuan.com/media/ftp/file/tetixokagodutoferibolif.pdfIn PDF document text
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/lieh6k5glo3bmpni62oc4rtst3/bugakudoniz.pdfIn PDF document text
- http://kodemari.info/data/files/56563034915.pdfIn PDF document text
- http://www.smpnuenen.nl/images/files/26001172621.pdfIn PDF document text
- http://sanarina-coaching.de/ckfinder/userfiles/files/12325752176.pdfIn PDF document text
- http://vakoplus.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/49993010304.pdfIn PDF document text
- http://roberlo.cz/www/files/file/wevoxelim.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/96566068229.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_off0000e66b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE66B | 10684 bytes |
SHA-256: 71e44fa9c5d5f21074099f30b73080c3ee2f6f5f64479755609bcb077b79ce1a |
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font_01_sfnt_off0000fec7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC7 | 18504 bytes |
SHA-256: 889ce180ffb7e916e428616e5407a5fb99cb867a6c0f006e3bddcae07e9a7b4b |
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font_02_sfnt_off00012e56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E56 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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