Malicious PDF — malware analysis report

Static analysis result for SHA-256 245cd19852654452…

MALICIOUS

PDF

71.0 KB Created: 2020-12-21 00:13:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 71a6bc8bc359c0da052aeb808723470a SHA-1: 7ebe8d1d9e96f6909b064b8ec7ace06901379565 SHA-256: 245cd198526544526e24a99e2c39e556f739c26ab543266bdbfc2a3e7f59cb4a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'The Sims mobile app cheats 2020', suggesting a lure to attract victims. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?utm_term=the+sims+mobile+app+cheats+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423145/normal_5f99c17e647b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450037/normal_5fa38b03d3ae6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f8760ff2a0a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460457/normal_5fd936ca5290c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5f9126098003d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5fadcfe7ae637.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5fcfe58d8069b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378608/normal_5fc14b5a50c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375197/normal_5fa1ce9b66481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487903/normal_5fc85e669da11.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/xewamejixolefaj/mock_examination_question_and_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/71032913051.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/kavodobevotidojitaweda.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/dodoxuniteloburakidabus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad64251d-3e41-4273-9313-794acfe36997/39009392024.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/kugamamafuf.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/livro_carlos_alberto_brilhante_ustra.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_off0000d946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD946 5440 bytes
SHA-256: cc883b35a6669cf3d903ff8b8891cb613ffa0c435b367e328f79de8c71da527c
font_01_sfnt_off0000eb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9A 10400 bytes
SHA-256: c45afd5faebafff852bd623def525e6e8477903027c3b40fbe0b6236c94d4ae7

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