Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32174d721307934…

MALICIOUS

PDF

40.6 KB Created: 2020-09-01 04:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 128b3a3bfac3e248d2aa507521244564 SHA-1: 1c618e77776b1b0a951797146756ffc4b082c7af SHA-256: e32174d721307934b85f2fbd0c52d1867f13dfaef34128ec89251b075980b250
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=www+aiou+date+sheet+ma+education'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://static.usrfiles.com/ugd/93c935_492c37b0ccde424aa8d6b6c26498ebd4.pdf'. The presence of a visual download button lure further supports the malicious intent.

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=www+aiou+date+sheet+ma+education
    • https://static.usrfiles.com/ugd/93c935_492c37b0ccde424aa8d6b6c26498ebd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0856fb6344c4291bfcaca9bee7b91e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_9598cd4bcc004f8ebc6a8e483cf660ae.pdf
    • https://static.usrfiles.com/ugd/7598fa_30801b11a1ed49e2b588754b0255d928.pdf
    • https://static.usrfiles.com/ugd/bf0735_b20aff9a473a4072b8ca74b3d47883ac.pdf
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/71027578956.pdf
    • https://cdn.shopify.com/s/files/1/0434/6308/2146/files/programa_escolar_de_mejora_continua_contestado.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/doxibubek.pdf
    • https://cdn.shopify.com/s/files/1/0434/6373/7510/files/shed_plans_10x12.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/situkipubegilunod.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/que_es_absceso_hepatico_amebiano.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4153/files/bcece_medical_certificate_format.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f7374e4ddc74456af9432fd1a30e279.pdf
    • https://static.usrfiles.com/ugd/b8c837_abd4c0ff4d86484dbc18fe6021417bed.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_d6b6f4d4109f41bfa602a533a3154155.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_off000061c6.bin
69c9afa63a217e40f7388307bf6e4300ec920ffc289564e131d7428a205fb701
pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 5156 bytes
font_01_sfnt_off00007345.bin
eab58d863670cd5282ee6cf08a7fcf8126365778c8f6409a5b15cb0097cefef9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7345 10012 bytes