Malicious PDF — malware analysis report

Static analysis result for SHA-256 457db17671a87521…

MALICIOUS

PDF

41.3 KB Created: 2020-08-18 14:38:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74050531b43251d0daf074d840fa6782 SHA-1: 2d62c9b118eb1e3f7ccc95f84cea7da7a1b6c139 SHA-256: 457db17671a87521c2f02375a8024126049f90aef978e3170c6a4a1257146971
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as sheet music, but it redirects to a malicious URL. The primary malicious link identified is https://ttraff.ru/pify?keyword=gaither+vocal+band+sheet+music. This technique is often used to distribute further malware or phishing content. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=gaither+vocal+band+sheet+music
    • http://jafupagan.maryshousedc.org/uploads/1/3/0/7/130738890/mexobulelasasir.pdf
    • http://fosafufib.ahlatemple.org/uploads/1/3/2/8/132814930/6503605.pdf
    • http://xeponur.oxfordhypnotherapyclinic.co.uk/uploads/1/3/1/4/131437462/gukomonov_fovubararedufu_tutugaxazi.pdf
    • http://files.carollongpottery.com/uploads/1/3/1/8/131858791/8851275.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/60512421563.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/algebra_equations.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/13437161028.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/64546382434.pdf
    • https://cdn.shopify.com/s/files/1/0432/7112/7206/files/new_government_accounting_system_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7575/4389/files/foriwolusunopige.pdf
    • https://cdn.shopify.com/s/files/1/0437/1120/1435/files/78761317120.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/audi_q5_2018_mmi_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/0332/2269/files/vba_excel_email.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/wobuderi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2471/0807/files/london_theatre_guide_may_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9953/files/spyder_clear_variables.pdf
    • https://cdn.shopify.com/s/files/1/0433/2804/5209/files/zumitunowap.pdf
    • https://cdn.shopify.com/s/files/1/0437/7296/9109/files/bugaxonudagobatidub.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_off00006201.bin
18a4569c9657d9cd10ce10299a3f0769f282868efee40d16ef4856ee73447f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 5412 bytes
font_01_sfnt_off00007439.bin
bacc88a2d3824f791e0d61102ad578a941701c66a6d72fdbcf9b0be504d7bb2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7439 10496 bytes

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