Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ff43e2aa6a8a00…

MALICIOUS

PDF

48.3 KB Created: 2020-07-28 03:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e3f386507334bc1d4e3dc201493751 SHA-1: 8d5290bcb8dfd8338ac3fca5a9ac7afc31b4ba0f SHA-256: e2ff43e2aa6a8a0085948bd4f9c9e8b6c93ba78b9b0a7d50f3b5dba6508b3296
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its structure, which includes a large number of external links pointing to Shopify-hosted PDFs. One of these links, 'https://ttraff.com/pify?keyword=curso+de+alta+performance+em+vendas', is flagged as a known malicious redirector. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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.com/pify?keyword=curso+de+alta+performance+em+vendas
    • http://files.jmaunlimited.com/uploads/1/3/1/6/131637814/zaxediviwijugoj.pdf
    • http://files.pdxccc.com/uploads/1/3/0/8/130815228/5742632.pdf
    • http://files.aislynnesimagesphotography.com/uploads/1/3/2/6/132696063/jamefexuw.pdf
    • http://files.serpentinecommunityfarm.org/uploads/1/3/0/8/130814118/9eb792.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/botabivupoxel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8692/files/28083658265.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/59943447068.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/wuriligolonazapotubisik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/72392042396.pdf
    • https://cdn.shopify.com/s/files/1/0436/2217/0787/files/wukibotareserukasitatu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6110/files/luwanuwoxigele.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/nuxotelo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/vagaludiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/damaxafeve.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_off00007aaa.bin
25de71a4ab38c58ee6cd9d0eb857278bf8d0d2582e6394b4585c8a23b7e2c63b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAA 5220 bytes
font_01_sfnt_off00008c5f.bin
e3d61e60cf4d6d2862b48d5aee9fccfcc63cfb87428682c053b0eb92994fb683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5F 12168 bytes

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