Malicious PDF — malware analysis report

Static analysis result for SHA-256 e995cb2e6f0a2da8…

MALICIOUS

PDF

35.6 KB Created: 2020-11-05 03:06:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef62cdacdbcad7c4cc4e66b94c1bc237 SHA-1: d7a6681a7f10c1970058371147bd2caf02d7b44e SHA-256: e995cb2e6f0a2da8a59623453f26221b8f0af99b5196129b595b32d645a3e354
94 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/123?keyword=the+most+dangerous+game+literary+analysis', is the primary indicator of malicious intent. While no scripts were extracted, the presence of a malicious redirector strongly suggests an attempt to lure the user to a harmful site, likely as part of a phishing or malware distribution campaign.

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.com/123?keyword=the+most+dangerous+game+literary+analysis
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5f8e6f75eb551.pdf
    • https://cdn-cms.f-static.net/uploads/4448720/normal_5fa0c3150f73b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/db13d9a0-a53a-484f-b674-7fbdd3e413f3/pedew.pdf
    • https://s3.amazonaws.com/tumasun/simifil.pdf
    • https://uploads.strikinglycdn.com/files/b2484fea-83a7-4035-b26a-e096d277bfad/93169885002.pdf
    • https://s3.amazonaws.com/mejados/nanav.pdf
    • https://s3.amazonaws.com/kitakilesa/1967_pontiac_grand_prix_quarter_panel.pdf
    • https://s3.amazonaws.com/zirojopemup/convert_webpage_to_addon_chrome.pdf
    • https://s3.amazonaws.com/vazisi/algebra_2_volume_1_textbook.pdf
    • https://s3.amazonaws.com/xanebavifamopez/asian_cooking_recipes.pdf
    • https://s3.amazonaws.com/dixaleko/27120553538.pdf
    • https://uploads.strikinglycdn.com/files/b472352d-4857-4538-9ce3-960b4bd44440/palme_kimya_11.snf.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_off00004e9b.bin
76e28357d7b0b18f11d3a238afdd12a6496d2358f07b48d673a33e7a2734d7da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9B 5288 bytes
font_01_sfnt_off0000606c.bin
3c5f07e3c3e9d0e568c1ce02b536c4f58bc0eefe85bbc646c0d6080c58599f33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 9620 bytes

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