MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, many hosted on disposable domains and employing UTM parameters, suggests a phishing or malware distribution campaign. The 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern, aiming to trick users into downloading a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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 https://oniceh.ru/uplcv?utm_term=apk+editor+pro+begal+developers PDF link annotation
- http://esipro.be/userfiles/file/55097118917.pdfIn PDF document text
- http://eco-building.cz/UserFiles/File/nebike.pdfIn PDF document text
- http://proficlim.ru/public/userfiles/file/fapodisujizafe.pdfIn PDF document text
- http://89928386.com/uploads/files/202109121737502491.pdfIn PDF document text
- http://tochalco.com/uploads/files/wagulujevomitomeme.pdfIn PDF document text
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/sofupufunugurejuz.pdfIn PDF document text
- http://copy-office.it/userfiles/file/zewaxivowem.pdfIn PDF document text
- https://media-get.com/userfiles/files/65288563654.pdfIn PDF document text
- http://alessandrobelleseveterinario.eu/userfiles/files/10589550193.pdfIn PDF document text
- https://service-panev.com/userfiles/50189661059.pdfIn PDF document text
- https://fereshtegan.net/basefile/fereshtegannet/files/71287504314.pdfIn PDF document text
- http://obasekiestates.com/UserFiles/file/gajinejolota.pdfIn PDF document text
- http://hiniceshine.com/upload/fewetajadamezuzuvili.pdfIn PDF document text
- http://parikshitconstruction.com/uploads/belevafijugewilun.pdfIn PDF document text
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/ef0ae93435f9cc593a8341382973d05e/13655048933.pdfIn PDF document text
- http://jiangsutravel.kr/userfiles/files/20210913_194809.pdfIn PDF document text
- http://prepearl.com/uploadsfile/3995268451.pdfIn PDF document text
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/161426e0345da3---90271004591.pdfIn PDF document text
- http://aktifbant.com/resimler/files/21760389150.pdfIn PDF document text
- http://www.sanjuktabanerjee.com/fckimages/file/bigofididun.pdfIn PDF document text
- http://chiron-ventures.com/chiron/home/img/upload/files/210918043223882652vn8uv.pdfIn PDF document text
- https://ecohort.info/userfiles/files/42167473907.pdfIn PDF document text
- http://domario.ru/userfiles/file/73510778480.pdfIn PDF document text
- http://duancanhotot.com/upload/files/kisomapajakixeluka.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_off0000d687.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD687 | 19060 bytes |
SHA-256: 936036b0ab62e6114e45344f374430568c2a01bc6bf86eb4925b9352f1849c05 |
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font_01_sfnt_off0001089d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1089D | 10740 bytes |
SHA-256: afb29c00a7f8b3920b32dba4910e2078922424dde97a47e96059ad7d1f710185 |
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font_02_sfnt_off0001210f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1210F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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