Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf56e97bae2d3ecb…

MALICIOUS

PDF

67.2 KB Created: 2020-08-14 05:43:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1c6f873422e3491b4355ddb5accb0b SHA-1: 38d3283bcc918a3139406867b62231c92d69e92d SHA-256: bf56e97bae2d3ecb7bedc4a4f89bae9167ddce96f9d630c520ccf9425fc0de1e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=calculate+roi+in+excel+template', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or credential harvesting.

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=calculate+roi+in+excel+template
    • http://files.madewithloverldesigns.com/uploads/1/3/0/7/130739517/sinarosum_sezipajuzox_kimekazitubus.pdf
    • http://bilisux.scrapskipsandiggers.uk/uploads/1/3/1/0/131069934/2752392.pdf
    • http://suxepewif.crossbackmassage.com/uploads/1/3/0/8/130813108/pojifezuzalevugabab.pdf
    • http://visimer.playfulpathwayspreschool.com/uploads/1/3/2/6/132683014/gugusewupifulodafej.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6930/files/50666305715.pdf
    • https://cdn.shopify.com/s/files/1/0427/5788/2022/files/shazam_app_pc.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/votabimubufipirabi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/pathfinder_core_rulebook.pdf
    • https://cdn.shopify.com/s/files/1/0437/3102/6071/files/arduino_code_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/acidit_titrable.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/jcps_school_calendar_2015-_16.pdf
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/92351291734.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/moguvi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/10242863406.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5831/files/53693274198.pdf
    • https://cdn.shopify.com/s/files/1/0434/3595/0241/files/les_alphas_livre_du_maitre.pdf
    • https://cdn.shopify.com/s/files/1/0436/7751/5941/files/skytrain_map_bangkok.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_off0000c972.bin
aaf819dd0b945e3e2f8bb7359f69f39c13e50c4a4571d9f4a6d82a1615a52e19
pdf-font-stream PDF embedded font (sfnt) at offset 0xC972 4876 bytes
font_01_sfnt_off0000d9f0.bin
3fc7e65c37bd0db6a906f9688652a0589ea5af758749867aaa4437fa53a5a4a1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F0 11088 bytes