MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to disposable domains, and exhibits characteristics of a link farm designed to obscure the true destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, likely to trick users into downloading further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://bjaimama.com/data/upload/2021/09/file/202109021253564689.pdf In PDF document text
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16139ed96c567f---ludoxoxelozomitofilo.pdfIn PDF document text
- http://koyomisushi.com/uploads/files/wedaluvebetozekusipa.pdfIn PDF document text
- http://propack-th.com/image/upload/File/nifebogonegekemipam.pdfIn PDF document text
- http://xn--tnqz8hz5cb8l.com/upload/files/fugakasifopaxa.pdfIn PDF document text
- http://kledingindex.nl/images/uploads/80995591818.pdfIn PDF document text
- http://amphorabeautyclub.com/campannas/file/6858513407.pdfIn PDF document text
- https://gikguamerica.com/userfiles/file/nugumizesesaduxezixupu.pdfIn PDF document text
- https://wigs4less.net/nbloom/fckuploads/file/61681194532.pdfIn PDF document text
- http://www.puhito.hu/uploads/2592454052.pdfIn PDF document text
- https://ita.kru.ac.th/ckfinder/userfiles/files/23986874390.pdfIn PDF document text
- https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/xanaxulutedenebidodi.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161317dfdbe336---parebaf.pdfIn PDF document text
- http://tokyoto.pl/UserFiles/file/32003753056.pdfIn PDF document text
- http://osayit.com/images/file/jatexipedi.pdfIn PDF document text
- http://ahxxzx.com/userfiles/202109/file/bixakazafu.pdfIn PDF document text
- https://alistairmills.com/ckfinder/userfiles/files/farugipiliked.pdfIn PDF document text
- https://5703n1n6999-6a55.com/contents/files/84733824498.pdfIn PDF document text
- http://atya.eu/files/file/57813037502.pdfIn PDF document text
- http://unicaconsultoriarh.com/images/files/wizur.pdfIn PDF document text
- http://www.anapharmata.hu/ckfinder/core/connector/php/files/1708724312.pdfIn PDF document text
- http://pyhunlian.com/uploadfile/file/xeret.pdfIn PDF document text
- http://carzip.biz/files/uploads/files/gakatabu.pdfIn PDF document text
- http://pekingtogo.com/uploads/files/34366337980.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=pipunata+dura+atha+mp3+downloadPDF 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_off0000cb51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB51 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e368.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE368 | 10716 bytes |
SHA-256: c3a9ac1625b2f7ceef8fecd40afe3c73bed12b7bbd20fc8d00f9c557015c0e4c |
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font_02_sfnt_off0000fbca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBCA | 19320 bytes |
SHA-256: bb46e4403b38586f7c83adff7f6628586d18c41e4ddf8b3dc19b7c6f379a3f4c |
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