Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f42170bc5941b94…

MALICIOUS

PDF

51.2 KB Created: 2020-08-11 00:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 659c70bed2b4ffdf2fc5d31310355e1e SHA-1: 7dd72484043c062e0a7b87234c9298722b3ff076 SHA-256: 1f42170bc5941b943da584b1a6e0185c801085bf76f9f0c93ea694155747ea53
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=functional+neurological+disorder+pdf, which is likely used to redirect the user to a further malicious destination.

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=functional+neurological+disorder+pdf
    • http://files.bbluntsheabutter.shop/uploads/1/3/1/3/131383018/bajof.pdf
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdf
    • http://files.christchurchguilford.org/uploads/1/3/1/3/131379398/5227456.pdf
    • http://files.goodteacherafc.com/uploads/1/3/2/6/132681426/05f78f1.pdf
    • http://files.jennyshepherdphotography.com/uploads/1/3/0/8/130814682/e6f3c54.pdf
    • https://cdn.shopify.com/s/files/1/0434/3096/9511/files/33987505854.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/drug_metabolism_phase_1_and_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/amazon_carding_tutorial_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1013/8017/files/27686039000.pdf
    • https://cdn.shopify.com/s/files/1/0439/5171/8558/files/71715065401.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5825/files/4584318362.pdf
    • https://cdn.shopify.com/s/files/1/0436/9829/0856/files/lalisodarer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/zixisativuxazidujanuxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/gogokideweraviret.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/kesesixosowumivurilusa.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_off00008809.bin
4c5b3b68ac045d4b95e9abae91e46bc091eae388b1b8afbf40f9cdb2ce283fc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8809 5276 bytes
font_01_sfnt_off00009a05.bin
95aca3730f3b0f71d8f9812f68ee0603f81af18b424b74e5bb9cdb69e4ddab07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A05 11472 bytes

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