Malicious PDF — malware analysis report

Static analysis result for SHA-256 4349710d75536385…

MALICIOUS

PDF

42.5 KB Created: 2020-08-28 00:25:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d86fdcd89ca9a74db33a8657e546c05d SHA-1: 7d8e8caacac8954e9a491e45c60801b9b51d27d2 SHA-256: 4349710d75536385959d9a645dc6f004a429a9ed8537de6ed4d3115d23deb246
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=how+to+program+brighthouse+remote+to+cable+box'. The document body, though heavily obfuscated, appears to contain this URL and other embedded URLs, suggesting a lure to external content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates that the document may be intended to trick users into believing they need a password to access an archive, a common tactic to bypass gateway security. The presence of numerous external PDF links, many hosted on Shopify, further supports a link farm or redirection strategy.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=how+to+program+brighthouse+remote+to+cable+box
    • http://sabetudu.mizunagardens.com/uploads/1/3/0/8/130814070/6651835.pdf
    • http://tosakikut.su80-9.com/uploads/1/3/1/4/131410685/nolebewitatagel-sadujopex-pujaderadi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0503/2086/files/marcius_sinaga_kraft_foods_indonsia.pdf
    • https://cdn.shopify.com/s/files/1/0437/3905/4231/files/87461103746.pdf
    • https://cdn.shopify.com/s/files/1/0434/7494/4153/files/kuxodut.pdf
    • https://cdn.shopify.com/s/files/1/0428/8947/8307/files/85431314071.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/best_free_marine_weather_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0430/8746/2551/files/effects_of_globalisation_on_developing_countries.pdf
    • https://cdn.shopify.com/s/files/1/0434/3791/6312/files/47337559487.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/22283791519.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_off000065c0.bin
65389630bdcf450532bce46f8ad97a129c736b4ea9de973ce31c0097be9a3f8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C0 5608 bytes
font_01_sfnt_off000078c0.bin
3e59c52cbaab556ed5fa9192efe98cffafc624765dc5f63fff62d1d78cdd1660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C0 10672 bytes

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