Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e8032db586dd91…

MALICIOUS

PDF

42.0 KB Created: 2020-08-26 03:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9530997f27548852e04570ade8749c0f SHA-1: b34d5f0b009f278142201188bf2d61de91034482 SHA-256: d4e8032db586dd9123dc99f20ba3cf7a7b89d7a0dc4e1909de5223181e58bbe9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=warframe+ivara+farmen'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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=warframe+ivara+farmen
    • http://files.uskarateandboxing.com/uploads/1/3/2/3/132302787/kekoxune_wigigexupad_womekabi_zijol.pdf
    • https://cdn.shopify.com/s/files/1/0436/6503/1321/files/6645514670.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/56308005044.pdf
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/tw_cen_mt.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/xuginolumuwuzulu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8626/6016/files/44475663580.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/rest_api_testing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/asme_material_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0440/1332/2398/files/approval_request_letter.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/bixum.pdf
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/nordictrack_act_commercial_elliptical.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/zisevuwoje.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_off0000647b.bin
d0e5b3bc3497ef1ec1f20486667d45ca14353feab385a112ce5ced5e268c5297		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647B 4776 bytes
font_01_sfnt_off000074b6.bin
7ff114d29658456df63f1964febbb6c9de05d26f918a12ffa2cd75bd12c997b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B6 12436 bytes

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