Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36691cd87d644e2…

MALICIOUS

PDF

50.0 KB Created: 2020-08-15 10:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 976d9e02cf24b8bb3cc6fafc2bb43c5d SHA-1: 90a437ff7c02ce527b4edd327e5386e1a7248806 SHA-256: e36691cd87d644e2a55e9dcbeb359b6e96979c5062dbeb7aa4a19b5dd5fee138
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/wb?keyword=fifa%20world%20cup%202018%20fixtures%20bangladesh%20time%20pdf%20hd, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure under the guise of providing FIFA World Cup fixture information.

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.
  • 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/wb?keyword=fifa%20world%20cup%202018%20fixtures%20bangladesh%20time%20pdf%20hd
    • http://files.prezziessugarloaf.com/uploads/1/3/1/1/131163620/lelefiziv_nipanofofifo_kuzemomos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/30856127011.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/jotusinurowixevuwesisogi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/band_gap_of_germanium.pdf
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/your_love_brandon_heath.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/zusokod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0956/4068/files/vision_ias_budget_2020_20_summary.pdf
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/67298725243.pdf
    • https://cdn.shopify.com/s/files/1/0430/6563/9073/files/jukuniturefoxevitaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/6237/6101/files/56116424644.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602d.bin
32c6de9805728c4447dc22b66bce7cff64ae3389c757146dd4cd5712b216e3b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x602D 6344 bytes
font_01_sfnt_off000075a1.bin
ed56b4f5a3ea38d52c9a98f02db7806e17696f8ad98cf0b50efa20e2c7e36ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A1 15268 bytes
font_02_sfnt_off0000a583.bin
53c3ec829963ec5a0af1bff4be2d724acb9959b277e5253d769434e6be684fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA583 16160 bytes

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