Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a5fa00f7505ab2…

MALICIOUS

PDF

73.3 KB Created: 2021-01-09 16:35:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3272f8a0a5c9793b1556a04a3fca7c26 SHA-1: 8654a77f6424afc2c8e008ec66a3b5657aead854 SHA-256: e4a5fa00f7505ab2bc09dcc88b7b50e7b5e2647130a130d21d02a5bd7abaaff9
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, includes text that appears to be a lure for 'landscape painting ideas'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/123?utm_term=landscape+painting+ideas+for+beginners In PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5fe5e153d844f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464995/normal_5fe8addedf442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f99fa6a20e08.pdfIn PDF document text
    • https://cdn.sqhk.co/sezunofubuzi/gicjjgj/sesemafokelur.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/4hg3hai/34199083321.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/Iiiji8h/starcraft_191_islander.pdfIn PDF document text
    • https://cdn.sqhk.co/malakizojaji/shjRih7/civil_war_photographs_dead_soldiers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fcf8322867de.pdfIn PDF document text
    • https://cdn.sqhk.co/sezepemanu/hfNOjiv/30638477137.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/gd6Ynij/android_cross_wallpaper_apps.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/zonivezada/matchbox_garage_playset_1969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a0f670d-da5f-4070-ae2e-8c038f62f909/faceing_math_lesson_1_algebraic_expressions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/kifetixapabuwapipumep.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_off0000e2c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C5 5372 bytes
SHA-256: e8ed2cd9e1e0c4a68542e49c7e77b72bde76298f0bc190cd8a8c15f116776152
font_01_sfnt_off0000f51f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51F 10272 bytes
SHA-256: 888f99d35e1fbc02a5407ee3daa59c712a9fed28fde6616059d43c0ffb3e5a44

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