Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3690877dcc8ed6…

MALICIOUS

PDF

75.3 KB Created: 2021-03-19 00:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da475c416187828d31944b536f5a9e7d SHA-1: d75e7c12633b025ced116f49487becc4d730051c SHA-256: 5e3690877dcc8ed6ada983fd93f6d5e25d1f6d6601816758a09004a23ce82bbe
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious. It contains an embedded URI pointing to 'https://soxebez.ru/award?keyword=aguas+de+marco+piano+pdf', suggesting a phishing or credential harvesting attempt disguised as a search result. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs indicates an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=aguas+de+marco+piano+pdf
    • http://carinsusa.info/silunopuwekinavetapexefe96hko.pdf
    • http://brumbum6.xyz/how_to_read_maytag_bravos_error_codescv416.pdf
    • https://cdn-cms.f-static.net/uploads/4472774/normal_604645c53ade7.pdf
    • http://digitalmicroteter.xyz/zifewofizejumuwotatym09j.pdf
    • https://cdn-cms.f-static.net/uploads/4404750/normal_601555b842aeb.pdf
    • https://cdn-cms.f-static.net/uploads/4487419/normal_603e388229032.pdf
    • https://static.s123-cdn-static.com/uploads/4369932/normal_5ff7198d8a017.pdf
    • https://cdn-cms.f-static.net/uploads/4387224/normal_603309769774c.pdf
    • https://cdn-cms.f-static.net/uploads/4367648/normal_603cfa5b7d0c2.pdf
    • https://cdn-cms.f-static.net/uploads/4368493/normal_6047a283c6657.pdf
    • https://cdn.sqhk.co/wenisuvuroju/BhdHKji/qr_code_barcode_reader_apk_download.pdf
    • https://cdn-cms.f-static.net/uploads/4486563/normal_5fd11a22ee884.pdf
    • https://static.s123-cdn-static.com/uploads/4470412/normal_6004a9275eb3a.pdf
    • https://cdn-cms.f-static.net/uploads/4366324/normal_6044f635eb95c.pdf
    • https://cdn-cms.f-static.net/uploads/4423188/normal_5fe8d9e5eb6c6.pdf
    • https://cdn.sqhk.co/temirikuji/d7jcGcN/jejukunebibigulobi.pdf
    • http://ujjjrrrrr.space/44366981724k1orm.pdf
    • https://cdn.sqhk.co/besuduxikuvo/1fdicih/worksheet_area_excel_definition.pdf
    • https://cdn-cms.f-static.net/uploads/4412887/normal_5fd84c1d15d4f.pdf
    • http://antonioit.fun/56641803669u24n.pdf
    • https://cdn.sqhk.co/viforoge/ifSU5if/terminator_dark_fate_sequel_ideas.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/be328cea-df80-4725-b271-416a9f8f212c/45428567468.pdf
    • https://uploads.strikinglycdn.com/files/217193f5-1aff-4456-9233-74c57fca7101/dukefolajobefixobelixuma.pdf
    • https://uploads.strikinglycdn.com/files/4c15147b-f532-4fa4-bf4d-a62ee439a939/50558530112.pdf
    • https://uploads.strikinglycdn.com/files/2926a978-a73f-4b45-b99e-fcf021adb08f/jadawirazemumaju.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e61c.bin
349f4b2a6172681c348839ddebf29d45be338eff23383a49bbba67a25a1c43c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE61C 5432 bytes
font_01_sfnt_off0000f885.bin
b1539dad0a6f994df0278fcea2a5844fc396232af8de98bb528e7ada249844df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF885 11880 bytes

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