Malicious PDF — malware analysis report

Static analysis result for SHA-256 971d2b427e5f17d5…

MALICIOUS

PDF

81.7 KB Created: 2020-08-20 21:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52178dd50115c10c3aa9b2cdd3d99d93 SHA-1: db381c3972f715a3f412a2c9dd8031908dd789f0 SHA-256: 971d2b427e5f17d50ec2bf3af6c26f33b097f59421cae3cae96e5ccc19267381
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=explosive+materials+used+in+explosive+forming'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0435/8907/5102/files/formulation_and_evaluation_of_antacid_suspension.pdf'. The document body, though heavily obfuscated, contains the malicious URL, suggesting the intent is to redirect users to potentially harmful content.

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=explosive+materials+used+in+explosive+forming
    • http://files.peterehrensberger.com/uploads/1/3/1/4/131407687/43a5f.pdf
    • http://files.vcoamaine.com/uploads/1/3/1/4/131408103/2240350.pdf
    • http://files.ren-ito.com/uploads/1/3/0/7/130738569/2890409.pdf
    • http://files.thecroftbourton.co.uk/uploads/1/3/0/8/130874125/wojaxikadiwonavuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/formulation_and_evaluation_of_antacid_suspension.pdf
    • https://cdn.shopify.com/s/files/1/0429/2155/8183/files/manual_j_calculation_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/early_childhood_education_definition.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/chola_ms_health_insurance_pre_auth_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/wulovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/snow_leopard_iso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/68830116481.pdf
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/8944596220.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/45484671803.pdf
    • https://cdn.shopify.com/s/files/1/0438/4129/0397/files/temple_of_elemental_evil_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/bozafekokejepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8901/files/64225683816.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/print_spot_utsa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/alteraciones_del_metabolismo_de_carbohidratos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecb3.bin
1ae5fd0153841ff986adf5f86b1dfa1d9c881082538e0d392f01dc0453a11e09
pdf-font-stream PDF embedded font (sfnt) at offset 0xECB3 5444 bytes
font_01_sfnt_off0000ff30.bin
d2d1d465a795e8a7c9087d45a7e8823d0702165654ff81e78fc35d86aba3dfb6
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF30 10700 bytes
font_02_sfnt_off000123eb.bin
ebaa9d42c58e3fd25c8264bcf4ef2319fee467c92cf53dcc1f377a20fc8d39b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x123EB 16148 bytes