Malicious PDF — malware analysis report

Static analysis result for SHA-256 5563cd56b6506b78…

MALICIOUS

PDF

69.5 KB Created: 2020-12-22 13:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9dacecb4ea6a504256e6960589120f1a SHA-1: fbaf3a03e7a1d5d76f69bf3b6cd2def08cd11fe2 SHA-256: 5563cd56b6506b781e4efe42c6ea8d62f89f5dae8c6069c297eb4d84f54e69dd
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when clicked, directs the user to a website related to changing an iPhone lock screen password. This is a common social engineering tactic used in phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a payload or phish credentials.

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://trafffi.ru/wb?keyword=change%20lock%20screen%20password%20iphone%206 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407807/normal_5fa01937a9458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5fd25969a5410.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383913/normal_5f95e0a3b3d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406809/normal_5fa0e4b6dd9dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5fa25c583ed4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401714/normal_5fe183b436b31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386606/normal_5fcc290c71d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466379/normal_5faab5487330d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdd2c445b7bc966055df433/t/5fde5755a478394ebc9e1148/1608406870709/bhavani_durga_bhavani_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/11079992181.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdeceaccb96363ef0bb8f98/t/5fdf069151a86c1b6c302672/1608451734083/idle_heroes_guide_pve.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/namakam_chamakam_in_english.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe213018e72e5fdb9ff7e7/1606295859588/79942205101.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfdb69ee0f32b8719dd1f/1606286777302/anti_bullying_quotes_for_students.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd28e788390d34f381f39e/t/5fde7702c18bd5077ca1147b/1608414979711/charisma_sheets_full_size_costco.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3799d60f2895dc1f82192/t/5fc462443485235c86529f2c/1606705733141/richard_hamilton_just_what_is_it_that_makes.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_off0000d1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E9 5548 bytes
SHA-256: 95615f84a8c89cbdb4e64a9ab67517eef9702819f4b7d38f3ead7faf25ae6505
font_01_sfnt_off0000e4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D4 10648 bytes
SHA-256: 4a7422cbc5374d6213330fa9ab790a83c6206889ee716cbd66f7f1f9d8a96942

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