Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09ae0d5289b53ff…

MALICIOUS

PDF

50.2 KB Created: 2020-07-29 13:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8528f4ff0dce9d8d7bf96cc0260b177d SHA-1: b9f0fe9eb58147b90dcf4abf99887f41acc18bea SHA-256: f09ae0d5289b53ffc6207c8feb349de6c583cf7993b33995c602f1e07005da0a
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector pointing to 'https://ttraff.cc/pify?keyword=ielts+writing+questions+with+answers+pdf'. This indicates a phishing or scam attempt, leveraging the document's purported content to entice clicks. The presence of multiple embedded URLs, many hosted on Shopify, suggests a link farm designed to obscure the final malicious destination. No scripts were extracted, limiting the analysis of direct payload execution.

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=ielts+writing+questions+with+answers+pdf
    • http://files.mrmcbrideteaches.com/uploads/1/3/0/7/130740533/d3ccc66b0f4.pdf
    • http://files.levimitchell.com/uploads/1/3/1/4/131407194/88714ac6.pdf
    • http://files.ctcornerstone.com/uploads/1/3/2/6/132681836/xaradar.pdf
    • https://cdn.shopify.com/s/files/1/0431/3917/0466/files/lirefutofogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3701/files/46476811673.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/dadugawuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/18945155475.pdf
    • https://cdn.shopify.com/s/files/1/0433/0559/9140/files/dusulapetawopolikuno.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/79468540061.pdf
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/mesodegiwikixolamanimulib.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/59950044468.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2557/files/47535162457.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6738/files/tetavunazogerodakuwubo.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/
    • https://cdn.shopify.com/s/files/1/0433/0559/9140/files/dusulapetawopolikuno.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008839.bin
fb1b5dfb5ebdd82b9f28b9af06c75ae5b5773e8ac9af2b8ec1721f20cbc732f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8839 5340 bytes
font_01_sfnt_off00009a59.bin
2ae8bc3c3b885ee11c6a7fed42abd6b8079a785c970947bf459747f52ff95a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A59 9788 bytes

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