MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic firings point to the document acting as a link farm, containing numerous embedded URLs that redirect to external sites. The presence of 'utm_term' parameters in some URLs suggests tracking or phishing campaigns, and the overall structure indicates a deliberate attempt to distribute malicious content or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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=angry+shark+apk+mod PDF link annotation
- http://orgue-chantepie.info/FCKeditor/upload/file/28248072713.pdfIn PDF document text
- https://foodvellythailand.com/upload/files/2240983471.pdfIn PDF document text
- http://0575zl.com/userfiles/file/zobotitijafitutu.pdfIn PDF document text
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/16141149686ffd---vebegujijeragufe.pdfIn PDF document text
- https://eminentland.com/admin/userfiles/files/peminebexabujibikaditiz.pdfIn PDF document text
- https://k-barrierfree.com/FileData/ckfinder/files/20210918_D408699B7E0829B8.pdfIn PDF document text
- https://altonika.pro/files/fck/file/puvugukorogogenebabona.pdfIn PDF document text
- https://communeouchamps.fr/userfiles/file/dujosotodenukamo.pdfIn PDF document text
- http://jiin-torng.com/uploadfiles/20210914024958.pdfIn PDF document text
- https://unitjaya.com/contents/files/79028041249.pdfIn PDF document text
- http://tevukasveza.lt/ckfinder/userfiles/files/dewenisug.pdfIn PDF document text
- http://pneusmarene.it/images/file/rerowapo.pdfIn PDF document text
- https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/gisilebat.pdfIn PDF document text
- http://doingthing.com/downloads/blog/geust/files/65976328898.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1614091da7fe84---92810584937.pdfIn PDF document text
- http://domosplast.hu/files/file/85796838516.pdfIn PDF document text
- http://twtqedu.com/userData/ebizro_board/file/pagixem.pdfIn PDF document text
- https://happycondo.leaddeehub.com/userfiles/files/63686977320.pdfIn PDF document text
- https://quangcaomattroi.com/uploads/news_file/jugoguz.pdfIn PDF document text
- http://valentine.tutaylamhet.com/storage/ckfinder/files/rujumu.pdfIn PDF document text
- https://khachsan295doson.vn/namthuan/images/news/files/29533253325.pdfIn PDF document text
- https://www.campacinter.com/image/upload/File/fezemufasutod.pdfIn PDF document text
- http://dunajecbiala.pl/upload/File/27761940611.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_off0000ca8b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA8B | 10656 bytes |
SHA-256: 2edeb95bb4dff96700e0a01d8d039c0ad917029567cb8c8633d18d2d6ed7a729 |
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font_01_sfnt_off0000e287.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE287 | 18056 bytes |
SHA-256: 611ab7e5b3dab6e6a0be9e65cf8dd6d16c345c8e1f3423a74b7e9b7fdb565d0b |
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font_02_sfnt_off000111cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111CF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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