MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a 'download button' heuristic and numerous embedded URLs, including one pointing to 'ekorob.pl/userfiles/file/', suggests the document is designed to trick users into downloading further malware. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the overall structure and heuristics point towards a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9963
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://ekorob.pl/userfiles/file/petelalepirojirub.pdf In PDF document text
- http://rockhouseschool.com/rockhouse/uploads/files/5847766222.pdfIn PDF document text
- http://swotaweb.com/img/upload/file/35224505398.pdfIn PDF document text
- https://guclupin.com/calisma2/files/uploads/kirozolegisotipujodenel.pdfIn PDF document text
- https://phukienbep.net/media/files/zemelob.pdfIn PDF document text
- https://laatuwhuisweerstralen.nl/upload/file/koxibuluju.pdfIn PDF document text
- http://rootbeadmill.com/upload_fck/file/2021-9-12/20210912135453975786.pdfIn PDF document text
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613be80ca300b---8271091084.pdfIn PDF document text
- https://sunnyvale.com/wysiwygfiles/file/45537028564.pdfIn PDF document text
- https://www.bevillelecomte.com/ckfinder/userfiles/files/89382242993.pdfIn PDF document text
- http://www.ondebiz.com/userfiles/file/81567358252.pdfIn PDF document text
- https://jvlegacyhomerepairsmd.com/nbloom/fckuploads/file/91397654905.pdfIn PDF document text
- https://npkfertilizerproduction.com/d/files/dosapinunujupeguxoto.pdfIn PDF document text
- http://langeline.com/ckeditor/upload/files/37557915173.pdfIn PDF document text
- http://hyundai-baoloc.com/luutru/files/54023947318.pdfIn PDF document text
- http://studiomarcheluzzo.it/userfiles/files/seguwexaradefo.pdfIn PDF document text
- http://prakseologia.eu/userfiles/file/vulefekib.pdfIn PDF document text
- http://zeroseistudio.eu/userfiles/files/5660328679.pdfIn PDF document text
- http://studiotecnicoligioni.com/userfiles/files/buwipaxesuxulav.pdfIn PDF document text
- https://kawanmto.org/contents/files/72147078370.pdfIn PDF document text
- http://xn----7sbezcba9a5aggb3j.xn--p1ai/ckfinder/userfiles/files/xuvorivitiw.pdfIn PDF document text
- http://veterina-naslunci.cz/userfiles/file/sufogatodawuda.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=the+power+of+positive+thinking+by+norman+vincent+peale+pdf+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_off0000c11d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC11D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d92f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD92F | 16892 bytes |
SHA-256: bf55e81a14c3f45ad95e723cd7a9c378fb6d8668a6f9ed2bffa479473e16bee1 |
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font_02_sfnt_off00010501.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10501 | 11528 bytes |
SHA-256: 58b3a1d0e11d339bbe8f0ee32b4c0237251965415834ab2c4808766ddc2eb9ca |
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