MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links pointing to potentially disposable hosting, suggesting a phishing or spam campaign. The presence of external URIs and the overall structure point towards an attempt to redirect the user to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://smidgel.ru/uplcv?utm_term=interesting+words+beginning+with+d PDF link annotation
- http://www.almansori-ye.com/almansorifiles/files/36551050071.pdfIn PDF document text
- http://webinaris.eu/ckfinder/userfiles/publics/files/rigewesariloruwusifidel.pdfIn PDF document text
- http://chinahongji.com/d/files/xuvogu.pdfIn PDF document text
- http://santabruna.cl/upload/file/64574543864.pdfIn PDF document text
- http://itexpertdog.nwoasis.com/upload/files/jexibove.pdfIn PDF document text
- http://www.florentmaussion.net/userfiles/File/21828105908.pdfIn PDF document text
- https://abouelhoulgroup.com/userfiles/files/wokaranuvulagarix.pdfIn PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f724a86641---wedejejiruzozobovomib.pdfIn PDF document text
- https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec4bbe4ad6---79737310519.pdfIn PDF document text
- http://termosystem.pl/userfiles/file/kemifikinolurebufe.pdfIn PDF document text
- http://kondicionery-vidnoe.ru/upload_picture/file/28475923832.pdfIn PDF document text
- http://omonetach.pl/foto/ilustracje/file/degenifedozemefeb.pdfIn PDF document text
- https://riwg.in/userfiles/file/33085329935.pdfIn PDF document text
- https://emartdeko.pl/galeria/file/54940920176.pdfIn PDF document text
- http://nbnjl.com/userfiles/files/86601562548.pdfIn PDF document text
- http://aokunoil.com/ckfinder/userfiles/files/87532499878.pdfIn PDF document text
- https://sarna-zapiekanki.pl/ckfinder/userfiles/files/rozadokibunimuxasub.pdfIn PDF document text
- http://architetturaurbanistica.it/userfiles/files/60518880157.pdfIn PDF document text
- http://gidaero.com/upload/fckeditor/file/79173111753.pdfIn PDF document text
- http://charmingcurls.se/upload/file/jewite.pdfIn PDF document text
- http://jiachuankeji.com/upload_fck/file/2021-9-2/20210902085014222308.pdfIn PDF document text
- https://www.afoa.org.ar/backend/ckfinder/userfiles/files/timexu.pdfIn macro / runtime command snippet
- https://daulte.ch/ckfinder/userfiles/files/defizivuwolufatesapom.pdfIn PDF document text
- http://boschvietnam.com/files/usersfiles/files/4235100104.pdfIn PDF document text
- http://jiachuankeji.com/uploIn macro / runtime command snippet
- 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_off0000ba4e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBA4E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d265.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD265 | 10496 bytes |
SHA-256: 4faa10086af9d2ac05e213f09c676ff2a6a130d8cdf2450aac5a0629dac8bf5c |
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font_02_sfnt_off0000ea09.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEA09 | 17080 bytes |
SHA-256: 7f7ffd28693da2fabc867ec9c050424f5d46173d5ee9744f35160d4c1c62030d |
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