Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66c585b7f36a44a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-19 17:57:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e4edad864ea681c6a20e7f9dd8b42ff SHA-1: dbd90e9d59e9f11177e1592d05194a077d1dd49e SHA-256: d66c585b7f36a44a07d08a5a0541fe5a1ef0e3bd23c51a1e5773c0df2733611f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary intent appears to be redirecting the user to a malicious site, likely for phishing or to download further malware.

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=ecfmg+epic+report
    • http://lologik.lightfactorystudio.com/uploads/1/3/0/7/130740609/9587863.pdf
    • http://files.castlecreationsflorals.com/uploads/1/3/1/4/131483154/duliledib-ribovabasabuta-noribav-nijidani.pdf
    • http://files.listentofusionn.org/uploads/1/3/0/7/130739011/c2f8f.pdf
    • http://files.oneshop42.com/uploads/1/3/1/3/131398560/demulesug_wuxativun_fofel_texew.pdf
    • http://kapij.cardiganbayregatta.co.uk/uploads/1/3/1/4/131438096/cdc3b3557212d66.pdf
    • https://cdn.shopify.com/s/files/1/0429/8237/5577/files/problem_solving_tasks.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/34511834019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/55314934592.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/28332115511.pdf
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/21226989453.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/vesulosavavusafukonege.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/48195121731.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/24162455400.pdf
    • https://cdn.shopify.com/s/files/1/0437/5232/5272/files/nosozewotizetinawef.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/62205501060.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_off00006285.bin
87e33073f454574e2d85be5cb925fe811891a9e601d83737b9fe0d72dbeff78f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6285 4872 bytes
font_01_sfnt_off00007309.bin
4a343648f94b36f15fbf8e667cab7a6049c6d89b0511db50d1246f32ae6c6e1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7309 9848 bytes

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