Malicious PDF — malware analysis report

Static analysis result for SHA-256 2377985d18d821cb…

MALICIOUS

PDF

42.4 KB Created: 2020-10-31 11:23:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0f68d5874cdd3400ab812f6c41e0ef9 SHA-1: e516d3943926f53418c8b944dcbc2ca53dd9d973 SHA-256: 2377985d18d821cba7c52ad5bfc22f493b1b47686a6e5f96ab98ca34d4f0003b
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The document body, though obfuscated, includes the same malicious URL and other URLs hosted on Weebly, suggesting a phishing or malware distribution lure. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.link/123?keyword=continuum+of+substance+use+disorders
    • https://vuzejugusu.weebly.com/uploads/1/3/4/4/134486163/kuvutedipomopaga.pdf
    • https://gidujinogojavu.weebly.com/uploads/1/3/4/0/134096303/5803138.pdf
    • https://pisefipekopaz.weebly.com/uploads/1/3/4/4/134461515/8676407f2543.pdf
    • https://sawalodisixujig.weebly.com/uploads/1/3/4/4/134490012/6584376.pdf
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5f950aa4d2f52.pdf
    • https://kunulidozejenu.weebly.com/uploads/1/3/3/9/133997834/9782e.pdf
    • https://cdn-cms.f-static.net/uploads/4421210/normal_5f974e3190f14.pdf
    • https://kazajiti.weebly.com/uploads/1/3/4/4/134456981/vewaniwubaluzog.pdf
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f9abc6a2d374.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wewuxuviwar/refibilekuzumimebu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006716.bin
0e0149ed3a024ea276a1914fe35ea08c90b8e2b79694e190b640bc1ef199dbdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 5180 bytes
font_01_sfnt_off00007898.bin
8a9cf6a6506acc8622e10238ca049484845e5a39bb8ed456b88d59382f3ea17f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7898 10744 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.