MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate malformed streams and a link farm structure, suggesting it's designed to redirect users to external, potentially malicious sites. The presence of embedded URLs and the PDF structure point towards a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://garglob.ru/uplcv?utm_term=korean+web+series+app PDF link annotation
- http://ricarda-allegra.de/userfiles/file/68060302552.pdfIn PDF document text
- http://www.injamal.es/nueva/ckfinder/userfiles/files/kuwiwafes.pdfIn PDF document text
- https://kawanmto.net/contents/files/80320522576.pdfIn PDF document text
- http://stihoplet.by/upload/editor/files/tibukonekewatamonado.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/godarivasafojugaropozudog.pdfIn PDF document text
- https://simpangkanan.com/contents/files/niboraxifoximo.pdfIn PDF document text
- https://isosklo.cz/uploads/fipurefilobukugisijisi.pdfIn PDF document text
- https://v-rshine.com/upload/images/files/kozunoj.pdfIn PDF document text
- https://asi-filter.pl/files/file/guzavep.pdfIn PDF document text
- http://josquin-capella.de/download/12499386646.pdfIn PDF document text
- https://cancelaria.pl/galeria/file/rapofemofixinigigino.pdfIn PDF document text
- http://087334211.kad.tw/kads/ckfinder/userfiles/files/vikugivozagodusa.pdfIn PDF document text
- https://soechi.net/userfiles/file/34573135257.pdfIn PDF document text
- https://msiutilities.net/documents/pinuzivufuwitojimelotefa.pdfIn PDF document text
- http://recviem.ru/img/upload/72529374208.pdfIn PDF document text
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/49ce6da27d8538bcceb26ac85a3ca00d/96256455163.pdfIn PDF document text
- http://lemma-studio.pl/userfiles/file/2351821123.pdfIn PDF document text
- http://ruben.pl/ckfinder/userfiles/files/93088650256.pdfIn PDF document text
- https://printsolutions.ro/uploads/wysiwyg/files/gofigezezubojinepiv.pdfIn PDF document text
- http://xmzhj.com/UserFiles/file/nadixinilerakizev.pdfIn PDF document text
- https://nileagriculturalindustries.com/file/31669591285.pdfIn PDF document text
- http://bafiti.com/sklep/userfiles/file/69479494359.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312f477e960---66673047572.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_off0000d77e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD77E | 16872 bytes |
SHA-256: dcd30e5be06965142f78f6fd68be3911831fde992ddb55bae4754d2ac9cd2a32 |
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font_01_sfnt_off00010309.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10309 | 10316 bytes |
SHA-256: ca7e00b6852caf94a7456b17a1f0337674d2a15492fa6e223eb23fbc9d918a2f |
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font_02_sfnt_off00011a3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A3D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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