Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f7055ed048d72f…

MALICIOUS

PDF

62.2 KB Created: 2021-01-27 06:02:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 593bf6ebc4bda00517a36f1a0dc1c7d2 SHA-1: 92166cbc50e2861e79d5dafc58e293f5caf9cbbc SHA-256: f5f7055ed048d72f27000495186f3e1d20cd0d9604d3b48ddcf7e6d399c4a9f0
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'bologen.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to 'Bedwars texture pack'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/wb?keyword=bedwars%20texture%20pack%201.%2016.%201 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4406775/normal_5fcbb14100328.pdfIn PDF document text
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/4bb494c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382952/normal_5fc662efc2d0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fd79df9a6111.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/uiaifOJ/mobile_png_for_youtube.pdfIn PDF document text
    • https://roxagidu.weebly.com/uploads/1/3/4/7/134748987/e0414c3c6.pdfIn PDF document text
    • https://lokesikaneweb.weebly.com/uploads/1/3/1/4/131437695/ratafaxolovu.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/pizivurapab/beyond_the_clouds_theme_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/vlookup_if_error_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/83315546387.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB979 5548 bytes
SHA-256: 579ca5c73c0e6208e7b9ccbba0a0c57d689dea177c6c276fa41e12c779b449a5
font_01_sfnt_off0000cc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8F 9340 bytes
SHA-256: b9281e91b3f8b3a547efeefc494dcaf129d845bcb30504e53c8fef946a5b37ac

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