MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm hosted on disposable domains, with numerous embedded URLs pointing to potentially malicious content. The presence of 'wkhtmltopdf' in the metadata suggests it might be a generated document, possibly for obfuscation or to bypass detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 http://charmingcurls.se/upload/file/safugaxadekekujuvu.pdf In PDF document text
- http://ailizia.com/userfiles/76650074979.pdfIn PDF document text
- http://adriennemason.com/assets/files/berufunaxabusojan.pdfIn macro / runtime command snippet
- https://regiefranchet.fr/userfiles/files/6300994365.pdfIn macro / runtime command snippet
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b974fb0928---porizujemevifazopojukazob.pdfIn PDF document text
- http://miyagi.chi-kara.net/Upload/files/kaluvu.pdfIn PDF document text
- http://konditsionery-reutov.ru/upload_picture/file/dadatis.pdfIn PDF document text
- https://speedwayinfo.hu/uploads/file/warenewozonuvetipobi.pdfIn PDF document text
- http://suachuaspa.com/upload/images-content/files/wodenipupobutoxagenufib.pdfIn PDF document text
- http://drivingtesttips.ie/fckeditor/userfiles/file/nuwal.pdfIn PDF document text
- http://megatex-plast.ru/pub/file/pomezaz.pdfIn PDF document text
- https://civilkontroll.hu/uploads/file/kanowifupuliku.pdfIn PDF document text
- https://www.casestilistas.es/ckfinder/userfiles/files/dixebolojiburufowufeseju.pdfIn PDF document text
- http://greenvisioninternational.gm/userfiles/file/fojalejupaluxipiramumepu.pdfIn PDF document text
- http://congtrinhnhaviet.vn/upload/files/56097053401.pdfIn PDF document text
- https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/t5hjgj3gigauss5nv0tckirqb5/12729185662.pdfIn PDF document text
- http://www.39koratmachinery.com/file_upload/files/mimeboranigavedutazexufo.pdfIn PDF document text
- http://herborgthailand.com/file_media/file_image/file/9091323008.pdfIn PDF document text
- http://aqbnb.com/uploadfile/file/70912934822.pdfIn PDF document text
- https://konchris.com/userfiles/file/1630775762.pdfIn PDF document text
- http://cuanhomkinhtoanthang.com/media/file/91311655826.pdfIn PDF document text
- https://peoplehelppeople.net/uploads/File/korisi.pdfIn PDF document text
- http://hulstcustoms.ru/uploads/files/94064197546.pdfIn PDF document text
- http://3e3i.com/UserFiles/file///39112278321.pdfIn PDF document text
- http://ailizia.cIn macro / runtime command snippet
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=change+dns+server+on+androidPDF link annotation
- 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_off0000dc1b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC1B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f42d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF42D | 17864 bytes |
SHA-256: ffbbe9d884bddf5eb04e1a908b34c3a7a7de648095f3264d67379d0e821d48fb |
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font_02_sfnt_off000121e2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121E2 | 10480 bytes |
SHA-256: 82f14f364f52741a1ddf21f8230adc93c9a569d517b295b6ef084ca5f480f2d0 |
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