Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b98566020c3a238…

MALICIOUS

PDF

41.3 KB Created: 2020-09-02 01:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83c613e8d9f22e59bd9d0d16c1500c82 SHA-1: 312fde3575a826fecb911240f172001b60459875 SHA-256: 2b98566020c3a238138e0b68ef5c9e8da04de64a1cc019c40bbaef5d208be6d1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=game+pokemon+nds+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0435/6171/3813/files/delphi_greece_tour_guides.pdf'. The document body, though partially corrupted, also contains these URLs, suggesting the primary intent is to redirect users to malicious infrastructure.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.cc/wix?keyword=game+pokemon+nds+android
    • https://cdn.shopify.com/s/files/1/0435/6171/3813/files/delphi_greece_tour_guides.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/82876637557.pdf
    • https://cdn.shopify.com/s/files/1/0458/5589/9801/files/guwukaponigabitumu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6698/2561/files/accidental_presidency_normal_font.pdf
    • https://static.usrfiles.com/ugd/57c819_940164e48a3441ee9643f31dda0733c2.pdf
    • https://static.usrfiles.com/ugd/fbccce_58a888d689ff4f77b6b78b452f5ceffb.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c27b2f29272466d99dc3253a7eca9cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_1797a17a8321472e953d95c1a1e07588.pdf
    • https://static.usrfiles.com/ugd/eb4c03_816cd633b6ab46de841916900e8c54b0.pdf
    • https://cdn.shopify.com/s/files/1/0429/8545/5769/files/kurtz_foundations_of_abstract_mathematics.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3253/files/gujemeb.pdf
    • https://static.usrfiles.com/ugd/b4609a_d29a0bff71a946aeb1e9bb89e5126da5.pdf
    • https://static.usrfiles.com/ugd/5bb01c_e357fee587fe4bfeabd7288fc2113d6c.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006406.bin
763e44a3192aec213d2a894a791bdd84ea86eb07bad7ef7c85545a49364d6832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6406 5168 bytes
font_01_sfnt_off00007585.bin
aa854159a3adeb8569c8a36d279c339246a591931fb3aaa9862c9ef8f9a12e83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7585 10472 bytes

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