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. The presence of numerous external URIs, many pointing to disposable hosting and acting as link farms, suggests a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the overall structure and heuristic firings strongly indicate a malicious PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://pistant.ru/uplcv?utm_term=seven+brief+lessons+on+physics+pdf+free PDF link annotation
- http://wellfoto.cz/pictures/files/75644169471.pdfIn PDF document text
- http://mibenjamin.com/userfiles/file/gazawoxesixatapanukojaton.pdfIn PDF document text
- http://faizleathergloves.com/userfiles/files/67380110623.pdfIn PDF document text
- http://ciaomamma.hu/editor_up/ziguvujade.pdfIn PDF document text
- https://devcons.org/uploads/userfiles/files/13450658215.pdfIn PDF document text
- https://lexcochoralsoc.org/demo/lccs/beta/userfiles/files/96818383482.pdfIn PDF document text
- http://ityab.com/cache/fck_files/file/sinonun.pdfIn PDF document text
- http://terezszilvia.com/images/uploaded/file/851708403.pdfIn PDF document text
- http://udaybharat.in/ckfinder/userfiles/files/pixijosalazegewenojenidur.pdfIn PDF document text
- http://innovad-ltd.com/userfiles/file/lipetilul.pdfIn PDF document text
- http://naphogacomposite.com/upload/files/bepevarexugezufen.pdfIn PDF document text
- https://xn--pssa17sw71b.tw/upimages/files/22988636955.pdfIn PDF document text
- http://clinicaveterinariagoitese.it/userfiles/files/giroxe.pdfIn PDF document text
- http://nature-revive.org/files/file/84734866869.pdfIn PDF document text
- http://xn--c1ajalgzu0a.xn--p1ai/userfiles/file/lemafejolivul.pdfIn PDF document text
- https://arendic.cl/files/6129328381.pdfIn PDF document text
- http://jfhcoaching.nl/userfiles/files/gojosu.pdfIn PDF document text
- http://asdgolfclubtoscana.com/writable/public/userfiles/file/98927254438.pdfIn PDF document text
- http://hanasushichoice.com/uploads/files/girelogotazabuv.pdfIn PDF document text
- http://hkparkkonutlari.com/image/files/39188053992.pdfIn PDF document text
- https://giorgiosantinelli.it/file/94564204704.pdfIn PDF document text
- http://pamatudarbai.lt/ckfinder/userfiles/files/77061113861.pdfIn PDF document text
- http://kbinteriery.cz/userfiles/file/novar.pdfIn PDF document text
- https://chuyennhakienvangvn.net/upload/files/foboberarixufofixolopovo.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_off0000cda5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCDA5 | 10852 bytes |
SHA-256: f9b045c3f7e0243085b87d69f0258c631e7e9bc9bc22db00d98d0b41dd61b10e |
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font_01_sfnt_off0000e665.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE665 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000fe77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE77 | 18564 bytes |
SHA-256: 3e4253c43f199bddada7d170aadaf918097ff35f06dd03413167a7745b3c3573 |
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