Malicious PDF — malware analysis report

Static analysis result for SHA-256 6304154a3229377c…

MALICIOUS

PDF

74.7 KB Created: 2021-02-22 02:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2360284374a29da3a6a9bc19d3ca79da SHA-1: c44fde9ae1f29b6aaf12f2ed6b1162e8c8e0de49 SHA-256: 6304154a3229377c112cc8943bd223d5f383d4c004fe06db9d402b8fbf039f61
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Super Mario Bros 3 athletic theme piano sheet music' and embeds multiple URLs, one of which is directly referenced by a heuristic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous suspicious URLs suggests the document's primary purpose is to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/strik?utm_term=super+mario+bros+3+athletic+theme+piano+sheet+music PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423189/normal_5fff9653bcd09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489609/normal_5ff7c70fd59bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_602d937d48fbf.pdfIn PDF document text
    • https://vejikawotepux.weebly.com/uploads/1/3/4/8/134887167/f2004798ae9d8.pdfIn PDF document text
    • http://ifeelgood.club/33178298069coxbo.pdfIn PDF document text
    • http://cpskras.website/xufomaxaxavepurelakelybdw0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402507/normal_5fdb337a8194d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384633/normal_600328683c2a4.pdfIn PDF document text
    • http://gravkamen.ru/kubewewagodoleu3.pdfIn PDF document text
    • http://sluzhba1.net/bexininonokovalina14vc0.pdfIn PDF document text
    • http://samelike.site/65108703140comvb.pdfIn PDF document text
    • https://xulasimij.weebly.com/uploads/1/3/2/8/132814518/1195617.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370266/normal_6000baa7504c2.pdfIn PDF document text
    • https://gasaromub.weebly.com/uploads/1/3/0/7/130776100/3403833.pdfIn PDF document text
    • http://f13x.xyz/belhaven_bay_surf_reportc2qqq.pdfIn PDF document text
    • http://znatural.space/69346302620hhwld.pdfIn PDF document text
    • https://sobiwololisa.weebly.com/uploads/1/3/0/9/130969717/851db615a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/dumupa/43576761718.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD593 5460 bytes
SHA-256: 860cf8201a5e25b52c4bff33f6cff42430a0ffbca5fd6ed28ada50825670690a
font_01_sfnt_off0000e7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E9 11476 bytes
SHA-256: 2cad49acf58ccd0b27541457ae27c7f055f22d322b14d40201425f7dcd74b189
font_02_sfnt_off00010eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EB9 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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