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 and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The presence of external URIs and the link farm heuristic strongly suggest this document is part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://krisoc.ru/uplcv?utm_term=migrate+sms+from+android+to+android PDF link annotation
- http://sportschoolindex.nl/images/uploads/loteba.pdfIn PDF document text
- http://thebrownbag.vn/upload/files/genejifozolovubetelorobe.pdfIn PDF document text
- http://flashdisplay.net/UploadFiles/FCKeditor/20210909043316.pdfIn PDF document text
- http://weilandensemble.nl/ckfinder/userfiles/files/wopewanufofediku.pdfIn PDF document text
- https://bd-sokolovska.eu/userfiles/file/melomav.pdfIn PDF document text
- https://kiaavcilar.com/upload/ckfinder/files/rosimomigowezovef.pdfIn PDF document text
- https://burlingame.com/wysiwygfiles/file/regasutewojumizanemo.pdfIn PDF document text
- http://climacom.eu/userfiles/files/88756880344.pdfIn PDF document text
- http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/liwavabosepexevutapibo.pdfIn PDF document text
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6e2702a2a---24191158181.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161358f01855ae---kofivezupeworit.pdfIn PDF document text
- http://szkolaprzybranowo.pl/ckfinder/userfiles/files/sowosetinijuvi.pdfIn PDF document text
- http://huyminhplastic.com/upload/files/70940943836.pdfIn PDF document text
- http://ainut.fi/userfiles/file/gifuno.pdfIn PDF document text
- http://ambvetesopo.eu/userfiles/files/55383362479.pdfIn PDF document text
- https://invision.buzyhub.com/files/wukudawumino.pdfIn PDF document text
- http://daming-school.com/userfiles/file/34547339454.pdfIn PDF document text
- https://istanbularicilikfestivali.com/upload/ckfinder/files/95156953380.pdfIn PDF document text
- https://makiriaszto.hu/ckfinder/userfiles/files/vafusekerifiserusodezit.pdfIn PDF document text
- http://huseyindurmuslar.com/images_upload/files/5186120657.pdfIn PDF document text
- https://k31szmq42-nu28.com/contents/files/24017124088.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_off0000b274.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB274 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA8B | 10644 bytes |
SHA-256: eb46d89ff11c1722c40b3abf3a77057984702ce148b1fd91ff0d937c3aacbef7 |
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font_02_sfnt_off0000e2b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2B3 | 15768 bytes |
SHA-256: 051069c7912f98fe7f0477c092b27e0d2b0a27d682a46142ae786f6b201b6c88 |
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