Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7eaf13c1869aad9…

MALICIOUS

PDF

36.1 KB Created: 2020-11-02 03:25:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c33afb75668d4f9dd93004051ec6f1d SHA-1: d457ac6be4a4938c39e2550e3aa37bf902c462b2 SHA-256: d7eaf13c1869aad9fca6e2182c2e788560a42cd27aa2632e6fb4a42e3e8b4600
94 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 'ttraff.club'. The ML classifier also flagged this PDF with high confidence. Although no scripts were extracted, the presence of a malicious URL within the document body indicates an attempt to lure the user to a potentially harmful site, likely for phishing or malware delivery.

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.club/123?keyword=kitchenaid+2555a+fridge+owners+manual
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/domijedaxixak.pdf
    • https://cdn-cms.f-static.net/uploads/4386594/normal_5f92d545262d9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rujabepifar/define_general_deterrence.pdf
    • https://s3.amazonaws.com/mijedusovineti/zorajuwojujewuwepor.pdf
    • https://s3.amazonaws.com/begijufadi/subixegunedunan.pdf
    • https://uploads.strikinglycdn.com/files/a7dfdac3-1ff5-4fc2-84ae-aa0f91ca0410/o_guia_do_mochileiro_das_galxias_resumo.pdf
    • https://uploads.strikinglycdn.com/files/9c6d8d76-0dae-4cc2-8925-5cbfdc5970bf/68838909400.pdf
    • https://uploads.strikinglycdn.com/files/e2bb1fde-fb39-4a38-907d-c072495379ce/18653377585.pdf
    • https://s3.amazonaws.com/pibabopuduj/german_english_dictionary_book.pdf
    • https://s3.amazonaws.com/temujonuwu/wuvonorefitipeleroram.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_off00004ae1.bin
fcfb446335383b810651dd67b6e4a89344f2ab348268c88e675a83cc5ccb99f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE1 5752 bytes
font_01_sfnt_off00005e74.bin
29233d780c6263ce1019200b160e660d123726ed39232bff1f7aeb082011bf20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 11396 bytes

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