MALICIOUS
114
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, many of which point to disposable hosting and are structured as a link farm. The ML classifier strongly indicates maliciousness, and the presence of embedded JavaScript suggests an attempt to execute malicious code or redirect the user to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613979270a7cc---fudukeso.pdf In PDF document text
- http://qdcmd.com/data/files/nonuwaritofemex.pdfIn PDF document text
- https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/50508290224.pdfIn PDF document text
- https://baobiachau.com/luutru/files/wufesakegewatovogonob.pdfIn macro / runtime command snippet
- http://dep14kirov.ru/userfiles/file/wejukuzazafiwopepemaro.pdfIn PDF document text
- http://megamento.com/_UploadFile/Images/file/6797010038.pdfIn PDF document text
- https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/85604890826.pdfIn PDF document text
- http://sbnjl.com/userfiles/files/86935129763.pdfIn PDF document text
- http://knshzj.com/CKEdit/upload/files/85452209387.pdfIn PDF document text
- http://factorycontrolprojects.com/userfiles/file/dedafelavubafejoxaso.pdfIn PDF document text
- http://all-premium.com/user_file/files/53773525476.pdfIn PDF document text
- https://fishboat.hr/files/forovolefumaluz.pdfIn PDF document text
- https://stealthwindow.tw/uploads/files/202109090426584406.pdfIn PDF document text
- https://posetili.ru/userfiles/file/tofofasivikijonanumadok.pdfIn PDF document text
- http://3gr-group.com/ci/userfiles/files/tebebevowesuk.pdfIn PDF document text
- http://wdnederland.nl/file/77208508687.pdfIn PDF document text
- http://bbmeti.it/userfiles/files/dutogitixo.pdfIn PDF document text
- http://surausa.com/uploads/files/lukaxopuwosavupezizigekax.pdfIn PDF document text
- http://sbcnepal.com/images/file/69467329533.pdfIn PDF document text
- http://petrduchek.com/files/nugevimuxet.pdfIn PDF document text
- http://5thaveseniors.org/userfiles/file/19432752021.pdfIn PDF document text
- https://phunhai.net/upload/files/51819004015.pdfIn PDF document text
- https://jvlegacyhomerIn macro / runtime command snippet
- https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mxq+pro+4k+iptv+setupPDF 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_off0000c95a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC95A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e171.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE171 | 10512 bytes |
SHA-256: 051543b561875025fa4901d6a17be3135a1a5ada8210154f82e8dc69fc598218 |
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font_02_sfnt_off0000f994.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF994 | 18168 bytes |
SHA-256: 1aa99d31bff3df88999bf1b94bc12d547a4a6c4ee17436675ca8ded81dba459a |
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