MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF hosts numerous links to disposable domains, suggesting a tactic to distribute malware or phish for information. The embedded URLs, such as 'https://krisoc.ru/uplcv?utm_term=apk+for+pc', further support the malicious intent by pointing to potentially harmful content.
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=apk+for+pc PDF link annotation
- https://smartcirclegroup.com/userfiles/file/19717019527.pdfIn PDF document text
- http://www.lbtfilm.com/uploads/files/gajojutewonidaviw.pdfIn PDF document text
- https://durimawar.com/contents/files/3398937207.pdfIn PDF document text
- https://www.utn.ac.cr/sites/default/files/files/35812104146.pdfIn PDF document text
- http://www.cda.org.hk/ckfinder/userfiles/files/bedabijofo.pdfIn PDF document text
- http://chrislahoda.ca/userfiles/file/wogaxuladazedi.pdfIn PDF document text
- https://kalitelivideoizle.com/resimler/files/vavamojolalezimufa.pdfIn PDF document text
- https://ceccarmaramures.ro/userfiles/file/sojimexuroti.pdfIn PDF document text
- http://oa30us.com/userfiles/file/81349609864.pdfIn PDF document text
- http://baracenter.be/userfiles/file/35150704482.pdfIn PDF document text
- http://asijskepotraviny.cz/files/file/64680727291.pdfIn PDF document text
- https://copperscraphandlers.com/ckfinder/userfiles/files/4740053799.pdfIn PDF document text
- https://cuatudongsaigon.net/uploads/files/43974412541.pdfIn PDF document text
- http://eptesteplelek.com/uploads/file/12454537963.pdfIn PDF document text
- https://hnhaa.com/userfiles/tnejp/files/51622359038.pdfIn PDF document text
- http://elektrostroy.kz/ckfinder/userfiles/files/5267386600.pdfIn PDF document text
- https://xn--b8qxb801j.tw/upload/files/59058034796.pdfIn PDF document text
- http://comlark.ru/userfiles/files/27063806473.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132eeff169cc---94849324066.pdfIn PDF document text
- http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/favovojewuwo.pdfIn PDF document text
- http://wellogo.in/userfiles/file///74428303254.pdfIn PDF document text
- http://biznesfishki.ru/files/userfiles/files/50270577947.pdfIn PDF document text
- http://ibookingkr.com/FileData/ckfinder/files/20210911_AB0DA5E2CEFF1610.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/8h6qiovrql61nluf6epk4ma4ul/foparesizap.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_off0000bf37.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF37 | 9744 bytes |
SHA-256: 861ff06617b0f657c4bb4f4008725c7e1a7f075f9fe84f288a763583bd9f8c35 |
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font_01_sfnt_off0000d49f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD49F | 17400 bytes |
SHA-256: ca25762ea8796769be30033dcc53a343038b69e17d939dd1824753b2f660e535 |
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font_02_sfnt_off00010112.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10112 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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