Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b563b730ce98fe…

MALICIOUS

PDF

36.0 KB Created: 2020-08-31 02:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88836fece3dfb0f15cacc7ce3816541d SHA-1: 7e5a4789aba41fbbf18a3a06e7a853c6457553c5 SHA-256: 96b563b730ce98fec0ef2ccb705c11ef0afdc1db3cb84687b111954ac7259e2c
128 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link and a large number of external PDF links, suggesting a link farm or redirection tactic. The presence of a 'download button' lure further supports the attack pattern of tricking users into clicking malicious links. The primary malicious URL identified is ttraff.cc, which redirects to content related to spelling rule worksheets.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=c+or+k+spelling+rule+worksheets
    • https://cdn.shopify.com/s/files/1/0435/1157/8776/files/lcool_e_fenois_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0462/2801/3207/files/just_the_right_shoe_collectors_value_guide_raine.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/92456338542.pdf
    • https://static.usrfiles.com/ugd/99965f_db59d1c3c69840a893d0acbaaecf16bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b34f62ec83c045cb9e642d86486e82c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a422e836c42a4d85b8a812df5422cc6d.pdf
    • https://cdn.shopify.com/s/files/1/0431/6469/6732/files/guerra_espiritual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/37978747841.pdf
    • https://cdn.shopify.com/s/files/1/0440/7784/2597/files/39761847202.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/vw_vanagon_workshop_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/acs_study_guides.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_off00005056.bin
a92bacaf451d169afbbe4b00384fa7af8b6c912824276536b4d29faf1ba8ae90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5056 4932 bytes
font_01_sfnt_off0000612e.bin
abf6b975a485b7759208df05a8bd78824e694dcd16aaa39306dc07446496f44a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 9968 bytes

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