Malicious PDF — malware analysis report

Static analysis result for SHA-256 d89d4bd684f25c5e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 05:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5283dfe6ddb6c54b2e16908104554d SHA-1: 94a071d0d009c2b525935ec6e639f462b5cfa8c7 SHA-256: d89d4bd684f25c5ea5ddc188f315fe790e7c76ca7fd44a4699397eb092b0e431
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=android+studio+emulator+bluetooth+le, which likely serves as a lure to a malicious payload. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous benign-looking Shopify links suggests an attempt to blend in with legitimate content.

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/pify?keyword=android+studio+emulator+bluetooth+le
    • http://files.drpattyslegacy.org/uploads/1/3/0/9/130969065/vokebigibawev.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/fannie_mae_flood_insurance_guidelines_for_condos.pdf
    • https://cdn.shopify.com/s/files/1/0440/2357/8774/files/wopiku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2391/files/dapopimideb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6553/9741/files/18740235168.pdf
    • https://cdn.shopify.com/s/files/1/0440/6103/2598/files/netipurujepigemodo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/38755846453.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/xaturu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/2931169329.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_off00005b5d.bin
24f5fec240cb5e021744a1a031210ea8175ef9a7c02098c75872e9f896e0f897		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5D 5196 bytes
font_01_sfnt_off00006cca.bin
a745c656c96bb154de2cd4c0be0368b324c72baa18030b69aec9924f1b717841		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 10188 bytes

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