Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e545147f3f39239…

MALICIOUS

PDF

78.0 KB Created: 2021-04-04 20:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c37ee4735a40cd490c09a83462c114a9 SHA-1: ef28203d952107c427416802226a75e99d74f6cf SHA-256: 1e545147f3f39239d8a38f0717f5125095f6dbd477e613dcfa729b8e9edb1fcb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, vilenefex.ru, which is likely used to host or redirect to a malicious payload. The document body, though heavily obfuscated, references "Papa's Donuteria" and "apkpure", suggesting a lure to trick users into downloading a fake game or application. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://vilenefex.ru/wix?keyword=papa%2527s+donuteria+apkpure PDF link annotation
    • http://lezirumari.sportsontheweb.net/public_relations_defined.pdfIn PDF document text
    • http://dorulezebum.sportsontheweb.net/texunukefoponitiduli.pdfIn PDF document text
    • https://cdn.sqhk.co/vebiziwob/gW0hhih/formula_2_2020_silly_season.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/jeAsic8/chess_genius_free_download_for_windows_7.pdfIn PDF document text
    • http://vovavipegum.getenjoyment.net/67020806555.pdfIn PDF document text
    • http://nimened.66ghz.com/88622578172.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/goviwigax/best_ppt_templates_free_2010.pdfIn PDF document text
    • https://849cba27-c1c2-4801-a47f-514a08c45c3c.filesusr.com/ugd/7f7a2c_98281d602f534c86b594f179840fd7c2.pdf?index=trueIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_914749dc6ee344779d18d76486f67884.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/votawawo/58432673891.pdfIn PDF document text
    • http://piveduto.rf.gd/lufefomewer.pdfIn PDF document text
    • http://mujigakevomo.epizy.com/62634928100.pdfIn PDF document text
    • http://daximogosamov.myartsonline.com/32662946201.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/72895405991.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/videpure.pdfIn PDF document text
    • http://togewogovimome.epizy.com/wizetubazonovasopuveme.pdfIn PDF document text
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_24902c448c65451a8c4760d7ef45bbaf.pdf?index=trueIn PDF document text
    • https://a6053a4b-6066-498d-92a8-7748b68531bc.filesusr.com/ugd/5f0d2f_57542c91096f4f23bbb6b1f500aa9b7a.pdf?index=trueIn PDF document text
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_313ec1ec80644d73b63cbaaa90eca8bc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/16728743883.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/2564286265.pdfIn PDF document text
    • http://bawesokiri.epizy.com/jazuvobimajada.pdfIn PDF document text
    • https://3d7304b5-8527-495f-b913-615d6f357a43.filesusr.com/ugd/ef7486_88940250dca947c8b0809f993587253c.pdf?index=trueIn PDF document text
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_0ddf4b61cbf842998bb91fab45faee07.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53A 5020 bytes
SHA-256: 3215ff16f3cf35d4c856b088a60087c21272da37ec952e56285d5c9d6d067697
font_01_sfnt_off00010660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10660 10528 bytes
SHA-256: f06232015c38f62f8719349f1d8b1a2f55b9f1b470d2403d70f5fdd2c658ade5

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